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2025-11-19riscv: pgtable: Use riscv_has_extension_unlikelyVivian Wang
Use riscv_has_extension_unlikely() to check for RISCV_ISA_EXT_SVVPTC, replacing the use of asm goto with ALTERNATIVE. The "unlikely" variant is used to match the behavior of the original implementation using ALTERNATIVE("nop", "j %l[svvptc]", ...). Note that this makes the check for RISCV_ISA_EXT_SVVPTC a runtime one if RISCV_ALTERNATIVE=n, but it should still be worthwhile to do so given that TLB flushes are relatively slow. Signed-off-by: Vivian Wang <wangruikang@iscas.ac.cn> Link: https://patch.msgid.link/20251020-riscv-altn-helper-wip-v4-1-ef941c87669a@iscas.ac.cn Signed-off-by: Paul Walmsley <pjw@kernel.org>
2025-11-19riscv: Remove __GFP_HIGHMEM maskingVishal Moola (Oracle)
Remove unnecessary __GFP_HIGHMEM masking, which was introduced with commit 380f2c1ae9d4 ("riscv: convert alloc_{pmd, pte}_late() to use ptdescs"). GFP_KERNEL doesn't contain __GFP_HIGHMEM. Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com> Link: https://patch.msgid.link/20251107182620.95844-1-vishal.moola@gmail.com Signed-off-by: Paul Walmsley <pjw@kernel.org>
2025-11-19RISC-V: Enable HOTPLUG_PARALLEL for secondary CPUsAnup Patel
The core kernel already supports parallel bringup of secondary CPUs (aka HOTPLUG_PARALLEL). The x86 and MIPS architectures already use HOTPLUG_PARALLEL and ARM is also moving toward it. On RISC-V, there is no arch specific global data accessed in the RISC-V secondary CPU bringup path so enabling HOTPLUG_PARALLEL for RISC-V would only require: 1) Providing RISC-V specific arch_cpuhp_kick_ap_alive() 2) Calling cpuhp_ap_sync_alive() from smp_callin() This patch is tested natively with OpenSBI on QEMU RV64 virt machine with 64 cores and also tested with KVM RISC-V guest with 32 VCPUs. Signed-off-by: Anup Patel <apatel@ventanamicro.com> Reviewed-by: Atish Patra <atishp@rivosinc.com> Link: https://patch.msgid.link/20250905122512.71684-1-apatel@ventanamicro.com Signed-off-by: Paul Walmsley <pjw@kernel.org>
2025-11-19remoteproc: imx_dsp_rproc: Simplify start/stop error handlingPeng Fan
Replace goto-based error handling with early return pattern in imx_dsp_rproc_{start,stop}() functions, and simplify if-else logic. No functional changes, only code structure improvements for better maintainability. Signed-off-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Link: https://lore.kernel.org/r/20251119-imx-dsp-2025-11-19-v4-12-adafd342d07b@nxp.com Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2025-11-19ALSA: pcmtest: Replace deprecated strcpy with strscpy_pad in setup_patt_bufsThorsten Blum
strcpy() has been deprecated [1] because it performs no bounds checking on the destination buffer, which can lead to buffer overflows. Replace it with the safer strscpy_pad(), and use kmalloc() instead of kzalloc() because strscpy_pad() zero-pads the destination buffer and therefore avoids writing to it twice. Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strcpy [1] Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev> Link: https://patch.msgid.link/20251119135217.233084-1-thorsten.blum@linux.dev Signed-off-by: Takashi Iwai <tiwai@suse.de>
2025-11-19remoteproc: imx_rproc: Remove enum imx_rproc_methodPeng Fan
There is no user of enum imx_rproc_method after moved to ops based method. Remove it. Reviewed-by: Frank Li <Frank.Li@nxp.com> Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com> Reviewed-by: Shengjiu Wang <shengjiu.wang@nxp.com> Reviewed-by: Iuliana Prodan <iuliana.prodan@nxp.com> Tested-by: Iuliana Prodan <iuliana.prodan@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://lore.kernel.org/r/20251119-imx-dsp-2025-11-19-v4-11-adafd342d07b@nxp.com Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2025-11-19remoteproc: imx_dsp_rproc: Simplify IMX_RPROC_RESET_CONTROLLER switch casePeng Fan
Introduce imx_dsp_rproc_reset_ctr_{start, stop, detect_mode}() helper functions for i.MX variants using IMX_RPROC_RESET_CONTROLLER to manage remote processors. Allows the removal of the IMX_RPROC_RESET_CONTROLLER switch-case blocks from imx_dsp_rproc_[start,stop,detect_mode](), resulting in cleaner and more maintainable code. No functional changes. Reviewed-by: Frank Li <Frank.Li@nxp.com> Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com> Reviewed-by: Shengjiu Wang <shengjiu.wang@nxp.com> Reviewed-by: Iuliana Prodan <iuliana.prodan@nxp.com> Tested-by: Iuliana Prodan <iuliana.prodan@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://lore.kernel.org/r/20251119-imx-dsp-2025-11-19-v4-10-adafd342d07b@nxp.com Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2025-11-19remoteproc: imx_dsp_rproc: Simplify IMX_RPROC_SCU_API switch casePeng Fan
Introduce imx_dsp_rproc_scu_api_{start, stop, detect_mode}() helper functions for i.MX variants using IMX_RPROC_SCU_API to manage remote processors. Allows the removal of the IMX_RPROC_SCU_API switch-case blocks from imx_dsp_rproc_[start,stop,detect_mode](), resulting in cleaner and more maintainable code. No functional changes. Reviewed-by: Frank Li <Frank.Li@nxp.com> Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com> Reviewed-by: Shengjiu Wang <shengjiu.wang@nxp.com> Reviewed-by: Iuliana Prodan <iuliana.prodan@nxp.com> Tested-by: Iuliana Prodan <iuliana.prodan@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://lore.kernel.org/r/20251119-imx-dsp-2025-11-19-v4-9-adafd342d07b@nxp.com Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2025-11-19drm/panel: sofef00: Non-continuous mode and video burst are supportedDavid Heidelberg
The panel supports both modes. Signed-off-by: David Heidelberg <david@ixit.cz> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-12-6cd55471e84e@ixit.cz
2025-11-19drm/panel: sofef00: Mark the LPM mode always-onDavid Heidelberg
The panel operated in low-power mode, with exception of changing the brightness levels. Signed-off-by: David Heidelberg <david@ixit.cz> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-11-6cd55471e84e@ixit.cz
2025-11-19drm/panel: sofef00: Simplify get_modesDavid Heidelberg
Levearage drm_connector_helper_get_modes_fixed helper function. Signed-off-by: David Heidelberg <david@ixit.cz> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-10-6cd55471e84e@ixit.cz
2025-11-19drm/panel: sofef00: Introduce compatible which includes the panel nameDavid Heidelberg
Compatible should correspond to the panel used and the driver currently supports only AMS628NW01 panel. Adapt the internal driver structures to reflect the name. Original, not very descriptive, compatible is kept to ensure compatibility with older device-trees. Signed-off-by: David Heidelberg <david@ixit.cz> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-9-6cd55471e84e@ixit.cz
2025-11-19drm/panel: sofef00: Initialise at 50% brightnessCasey Connolly
Initialising at max brightness is not necessary. Half brightness is much more comfortable. Signed-off-by: Casey Connolly <casey.connolly@linaro.org> Signed-off-by: David Heidelberg <david@ixit.cz> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-8-6cd55471e84e@ixit.cz
2025-11-19drm/panel: sofef00: Add prepare_prev_first flag to drm_panelCasey Connolly
This corrects the host initialisation sequence so that we can send DSI/DCS commands in prepare(). Signed-off-by: Casey Connolly <casey.connolly@linaro.org> Signed-off-by: David Heidelberg <david@ixit.cz> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-7-6cd55471e84e@ixit.cz
2025-11-19drm/panel: sofef00: Introduce page macroDavid Heidelberg
Introducing the macro make the code a bit clearer. Looking at other Samsung drivers, I assume it's lvl2, thou due to not available documentation it's only educated guess. Signed-off-by: David Heidelberg <david@ixit.cz> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-6-6cd55471e84e@ixit.cz
2025-11-19drm/panel: sofef00: Split sending commands to the enable/disable functionsDavid Heidelberg
It's not possible to send DSI panel commands in the .unprepare. Move it to .disable and do similar for prepare, where we move the display on to the .enable. Signed-off-by: David Heidelberg <david@ixit.cz> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-5-6cd55471e84e@ixit.cz
2025-11-19drm/panel: sofef00: Handle all regulatorsDavid Heidelberg
Recently we documented, there is more than vddio regulator, adapt the driver to work with VCI and POC regulator. Signed-off-by: David Heidelberg <david@ixit.cz> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-4-6cd55471e84e@ixit.cz
2025-11-19drm/panel: sofef00: Clean up panel description after s6e3fc2x01 removalDavid Heidelberg
Remove leftover from s6e3fc2x01 support drop and clarify supported panel. The Samsung SOFEF00 DDIC is used in multiple phones, so describe it properly and generalize. Fixes: e1eb7293ab41 ("drm/panel: samsung-sofef00: Drop s6e3fc2x01 support") Signed-off-by: David Heidelberg <david@ixit.cz> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-3-6cd55471e84e@ixit.cz
2025-11-19dt-bindings: panel: Convert Samsung SOFEF00 DDIC into standalone yamlDavid Heidelberg
Reason for moving from simple panel is this DDIC has three supplies, while panel-simple-dsi is limited to one. Previous compatible only described the DDIC, but didn't include panel connected to it. Let's fix it, and offer bindings authors two compatibles to distinguish the connected panel. Basic description for SOFEF00 DDIC with attached panels - Samsung AMS601NT22 6.01 inch, 1080x2160 pixels, 18:9 ratio - Samsung AMS628NW01 6.28 inch, 1080x2280 pixels, 19:9 ratio There is only one user which uses samsung,sofef00 and it's updated to comply within this patch series. Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: David Heidelberg <david@ixit.cz> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251119-sofef00-rebuild-v3-1-6cd55471e84e@ixit.cz
2025-11-19remoteproc: imx_dsp_rproc: Simplify IMX_RPROC_MMIO switch casePeng Fan
Introduce imx_dsp_rproc_mmio_{start, stop, detect_mode}() helper functions for i.MX variants using IMX_RPROC_MMIO to manage remote processors. Allows the removal of the IMX_RPROC_MMIO switch-case blocks from imx_dsp_rproc_[start,stop,detect_mode](), resulting in cleaner and more maintainable code. No functional changes. Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com> Reviewed-by: Shengjiu Wang <shengjiu.wang@nxp.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Reviewed-by: Iuliana Prodan <iuliana.prodan@nxp.com> Tested-by: Iuliana Prodan <iuliana.prodan@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://lore.kernel.org/r/20251119-imx-dsp-2025-11-19-v4-8-adafd342d07b@nxp.com Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2025-11-19drm/panel: ilitek-ili9881d: Add support for Wanchanglong W552946AAA panelChaoyi Chen
W552946AAA is a panel by Wanchanglong. This panel utilizes the Ilitek ILI9881D controller. W552946AAA is similar to W552946ABA, but the W552946AAA only uses 2 lanes. Tested on rk3506g-evb1-v10. Signed-off-by: Chaoyi Chen <chaoyi.chen@rock-chips.com> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251106020632.92-6-kernel@airkyi.com
2025-11-19dt-bindings: ili9881c: Add compatible string for Wanchanglong w552946aaaChaoyi Chen
Like w552946aba, w552946aaa uses the Ilitek ILI9881D controller chip, and it supports up to 2 lanes. Signed-off-by: Chaoyi Chen <chaoyi.chen@rock-chips.com> Acked-by: Conor Dooley <conor.dooley@microchip.com> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251106020632.92-2-kernel@airkyi.com
2025-11-19remoteproc: imx_dsp_rproc: Move imx_dsp_rproc_dcfg closer to ↵Peng Fan
imx_dsp_rproc_of_match Move the imx_dsp_rproc_dcfg structure definitions closer to imx_dsp_rproc_of_match to prepare for adding start/stop/detect_mode ops for each i.MX variant. Avoids the need to declare function prototypes such as 'static int imx_dsp_rproc_mbox_init(struct imx_dsp_rproc *priv)' at the beginning of the file, improving code organization and readability. No functional changes. Reviewed-by: Frank Li <Frank.Li@nxp.com> Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com> Reviewed-by: Shengjiu Wang <shengjiu.wang@nxp.com> Reviewed-by: Iuliana Prodan <iuliana.prodan@nxp.com> Tested-by: Iuliana Prodan <iuliana.prodan@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://lore.kernel.org/r/20251119-imx-dsp-2025-11-19-v4-7-adafd342d07b@nxp.com Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2025-11-19drm/panel: ronbo-rb070d30: fix warning with gpio controllers that sleepJosua Mayer
The ronbo-rb070d30 controles the various gpios for reset, standby, vertical and horizontal flip using the non-sleeping gpiod_set_value() function. Switch to using gpiod_set_value_cansleep() when controlling reset_gpio to support GPIO providers that may sleep, such as I2C GPIO expanders. This fixes noisy complaints in kernel log for gpio providers that do sleep. Signed-off-by: Josua Mayer <josua@solid-run.com> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251117-imx8mp-hb-iiot-v3-5-bf1a4cf5fa8e@solid-run.com
2025-11-19dt-bindings: panel: lvds: add Winstar WF70A8SYJHLNGAJosua Mayer
Add Winstar WF70A8SYJHLNGA 7 inch WSVGA lvds panel. Acked-by: Conor Dooley <conor.dooley@microchip.com> Signed-off-by: Josua Mayer <josua@solid-run.com> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251117-imx8mp-hb-iiot-v3-3-bf1a4cf5fa8e@solid-run.com
2025-11-19dt-bindings: display: panel: ronbo,rb070d30: panel-common refJosua Mayer
Add missing ref on panel-common.yaml for this dsi panel so that common properties can be shared. Drop reset-gpios and backlight as they are already in panel-common. Switch from additionalProperties to unevaluatedProperties so that common panel properties are available without repeating them in this binding. Notably panel-common defines the "port" property for linking panels to a source - which was missing from this panel. Mark it as required. Signed-off-by: Josua Mayer <josua@solid-run.com> Acked-by: Conor Dooley <conor.dooley@microchip.com> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251117-imx8mp-hb-iiot-v3-2-bf1a4cf5fa8e@solid-run.com
2025-11-19remoteproc: imx_dsp_rproc: Use start/stop/detect_mode ops from imx_rproc_dcfgPeng Fan
Allow each platform to provide its own implementation of start/stop/ detect_mode operations, and prepare to eliminate the need for multiple switch-case statements. Improve code readability and maintainability by encapsulating platform-specific behavior. No functional changes. Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com> Reviewed-by: Shengjiu Wang <shengjiu.wang@nxp.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Reviewed-by: Iuliana Prodan <iuliana.prodan@nxp.com> Tested-by: Iuliana Prodan <iuliana.prodan@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://lore.kernel.org/r/20251119-imx-dsp-2025-11-19-v4-6-adafd342d07b@nxp.com Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2025-11-19drm/panel: jadard-jd9365da-h3: Use dev_err_probe() instead of ↵Abhishek Rajput
DRM_DEV_ERROR() during probing The DRM_DEV_ERROR() has been deprecated, and use dev_err_probe() can be better. The other reason is that dev_err_probe() help avoid unexpected repeated err logs during defered probing. Signed-off-by: Abhishek Rajput <abhiraj21put@gmail.com> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251117064702.222424-1-abhiraj21put@gmail.com
2025-11-19remoteproc: imx_dsp_rproc: Drop extra spacePeng Fan
Drop extra space between return and zero. Reviewed-by: Frank Li <Frank.Li@nxp.com> Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com> Reviewed-by: Shengjiu Wang <shengjiu.wang@nxp.com> Reviewed-by: Iuliana Prodan <iuliana.prodan@nxp.com> Tested-by: Iuliana Prodan <iuliana.prodan@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://lore.kernel.org/r/20251119-imx-dsp-2025-11-19-v4-5-adafd342d07b@nxp.com Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2025-11-19drm/panel: simple: Add Raystar RFF500F-AWH-DNN panel entryFabio Estevam
Add support for the Raystar RFF500F-AWH-DNN 5.0" TFT 840x480 LVDS panel. Signed-off-by: Fabio Estevam <festevam@gmail.com> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251115025827.3113790-3-festevam@gmail.com
2025-11-19dt-bindings: display: simple: Add Raystar RFF500F-AWH-DNN panelFabio Estevam
Add Raystar RFF500F-AWH-DNN 5.0" TFT 840x480 LVDS panel compatible string. Signed-off-by: Fabio Estevam <festevam@gmail.com> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251115025827.3113790-2-festevam@gmail.com
2025-11-19dt-bindings: vendor-prefixes: Add Raystar Optronics, IncFabio Estevam
Raystar Optronics is an LCD manufacturer based in Taiwan: https://www.raystar-optronics.com/ Add a vendor prefix for it. Signed-off-by: Fabio Estevam <festevam@nabladev.com> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251115025827.3113790-1-festevam@gmail.com
2025-11-19remoteproc: imx_dsp_rproc: Use dev_err_probe() for firmware and mode errorsPeng Fan
Use dev_err_probe() to simplify the code. No functional change. Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com> Reviewed-by: Shengjiu Wang <shengjiu.wang@nxp.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Reviewed-by: Iuliana Prodan <iuliana.prodan@nxp.com> Tested-by: Iuliana Prodan <iuliana.prodan@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://lore.kernel.org/r/20251119-imx-dsp-2025-11-19-v4-4-adafd342d07b@nxp.com Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2025-11-19gpu/drm: panel: simple-panel: add Samsung LTL106AL01 LVDS panel supportSvyatoslav Ryhel
Samsung LTL106AL01 is a 10.6" FWXGA (1366x768) simple LVDS panel found in Microsoft Surface RT tablet. Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251110091440.5251-6-clamor95@gmail.com
2025-11-19dt-bindings: display: panel: document Samsung LTL106AL01 simple panelSvyatoslav Ryhel
Document Samsung LTL106AL01 simple LVDS panel. Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com> Acked-by: Rob Herring (Arm) <robh@kernel.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251110091440.5251-5-clamor95@gmail.com
2025-11-19gpu/drm: panel: add support for LG LD070WX3-SL01 MIPI DSI panelSvyatoslav Ryhel
The LD070WX3 is a Color Active Matrix Liquid Crystal Display with an integral Light Emitting Diode (LED) backlight system. The matrix employs a-Si Thin Film Transistor as the active element. It is a transmissive type display operating in the normally Black mode. This TFT-LCD has 7.0 inches diagonally measured active display area with WXGA resolution (800 by 1280 pixel array). LG LD070WX3-SL01 MIPI DSI panel was treated as simple DSI panel when it is actually not and requires proper setup for correct work. Simple panel work relied on preliminary configuration done by bootloader. Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com> Reviewed-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251110091440.5251-3-clamor95@gmail.com
2025-11-19dt-bindings: display: panel: properly document LG LD070WX3 panelSvyatoslav Ryhel
LG LD070WX3-SL01 was mistakenly documented as a simple DSI panel, which it clearly is not. Address this by adding the proper schema for this panel. There is only one user of this panel binding in the mainline Linux kernel, which is the Nvidia tablet Tegra Note 7. Its panel is broken anyway since it cannot initialize properly if the bootloader does not leave a pre-initialized panel. It also cannot suspend or re-initialize properly, since no DSI configuration is set and it has a loose regulator which relies on an always-on property rather than being hooked to the panel where it belongs. Tegra Note 7 device tree is adjusted as a part of this series. Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com> Acked-by: Conor Dooley <conor.dooley@microchip.com> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251110091440.5251-2-clamor95@gmail.com
2025-11-19remoteproc: imx_dsp_rproc: Use devm_pm_runtime_enable() helperPeng Fan
Current code on the cleanup path just disables runtime PM for a device. Using resource managed version devm_pm_runtime_enable() registers a cleanup callback that sets autosuspend to false and then disables runtime PM for a device. So, basically the same functionality as we don't use autosuspend anyway. As a result, the .remove callback is no longer needed, reducing boilerplate code. Reviewed-by: Frank Li <Frank.Li@nxp.com> Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com> Reviewed-by: Shengjiu Wang <shengjiu.wang@nxp.com> Reviewed-by: Iuliana Prodan <iuliana.prodan@nxp.com> Tested-by: Iuliana Prodan <iuliana.prodan@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://lore.kernel.org/r/20251119-imx-dsp-2025-11-19-v4-3-adafd342d07b@nxp.com Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2025-11-19remoteproc: imx_dsp_rproc: Use devm_rproc_add() helperPeng Fan
Replace manual rproc_add() and cleanup logic with devm_rproc_add(), which ties the remoteproc lifecycle to the device's lifecycle. This simplifies error handling and ensures proper cleanup. No functional changes. Reviewed-by: Frank Li <Frank.Li@nxp.com> Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com> Reviewed-by: Shengjiu Wang <shengjiu.wang@nxp.com> Reviewed-by: Iuliana Prodan <iuliana.prodan@nxp.com> Tested-by: Iuliana Prodan <iuliana.prodan@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://lore.kernel.org/r/20251119-imx-dsp-2025-11-19-v4-2-adafd342d07b@nxp.com Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2025-11-19mfd: simple-mfd-i2c: Don't use "proxy" headersAndy Shevchenko
Update header inclusions to follow IWYU (Include What You Use) principle. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://patch.msgid.link/20251111111930.796837-3-andriy.shevchenko@linux.intel.com Signed-off-by: Lee Jones <lee@kernel.org>
2025-11-19mfd: simple-mfd-i2c: Make ID table style consistentAndy Shevchenko
The lines in the OF ID table are written in three different styles. Choose the most common in the kernel and update accordingly. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://patch.msgid.link/20251111111930.796837-2-andriy.shevchenko@linux.intel.com Signed-off-by: Lee Jones <lee@kernel.org>
2025-11-19remoteproc: imx_dsp_rproc: Simplify power domain attach and error handlingPeng Fan
Refactor imx_dsp_attach_pm_domains() to use devm_pm_domain_attach_list() directly, removing manual detach logic and simplifying resource management. Also replace verbose error handling in imx_dsp_rproc_probe() with dev_err_probe() for cleaner and more consistent error reporting. No functional changes. Reviewed-by: Frank Li <Frank.Li@nxp.com> Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com> Reviewed-by: Shengjiu Wang <shengjiu.wang@nxp.com> Reviewed-by: Iuliana Prodan <iuliana.prodan@nxp.com> Tested-by: Iuliana Prodan <iuliana.prodan@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://lore.kernel.org/r/20251119-imx-dsp-2025-11-19-v4-1-adafd342d07b@nxp.com Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2025-11-19arm64, tlbflush: don't TLBI broadcast if page reused in write faultHuang Ying
A multi-thread customer workload with large memory footprint uses fork()/exec() to run some external programs every tens seconds. When running the workload on an arm64 server machine, it's observed that quite some CPU cycles are spent in the TLB flushing functions. While running the workload on the x86_64 server machine, it's not. This causes the performance on arm64 to be much worse than that on x86_64. During the workload running, after fork()/exec() write-protects all pages in the parent process, memory writing in the parent process will cause a write protection fault. Then the page fault handler will make the PTE/PDE writable if the page can be reused, which is almost always true in the workload. On arm64, to avoid the write protection fault on other CPUs, the page fault handler flushes the TLB globally with TLBI broadcast after changing the PTE/PDE. However, this isn't always necessary. Firstly, it's safe to leave some stale read-only TLB entries as long as they will be flushed finally. Secondly, it's quite possible that the original read-only PTE/PDEs aren't cached in remote TLB at all if the memory footprint is large. In fact, on x86_64, the page fault handler doesn't flush the remote TLB in this situation, which benefits the performance a lot. To improve the performance on arm64, make the write protection fault handler flush the TLB locally instead of globally via TLBI broadcast after making the PTE/PDE writable. If there are stale read-only TLB entries in the remote CPUs, the page fault handler on these CPUs will regard the page fault as spurious and flush the stale TLB entries. To test the patchset, make the usemem.c from vm-scalability (https://git.kernel.org/pub/scm/linux/kernel/git/wfg/vm-scalability.git). support calling fork()/exec() periodically. To mimic the behavior of the customer workload, run usemem with 4 threads, access 100GB memory, and call fork()/exec() every 40 seconds. Test results show that with the patchset the score of usemem improves ~40.6%. The cycles% of TLB flush functions reduces from ~50.5% to ~0.3% in perf profile. Signed-off-by: Huang Ying <ying.huang@linux.alibaba.com> Reviewed-by: Ryan Roberts <ryan.roberts@arm.com> Reviewed-by: Barry Song <baohua@kernel.org> Acked-by: Zi Yan <ziy@nvidia.com> Cc: Will Deacon <will@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: David Hildenbrand <david@redhat.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Yang Shi <yang@os.amperecomputing.com> Cc: Christoph Lameter (Ampere) <cl@gentwo.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Kevin Brodsky <kevin.brodsky@arm.com> Cc: Yin Fengwei <fengwei_yin@linux.alibaba.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org Reviewed-by: David Hildenbrand (Red Hat) <david@kernel.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2025-11-19mm: add spurious fault fixing support for huge pmdHuang Ying
The page faults may be spurious because of the racy access to the page table. For example, a non-populated virtual page is accessed on 2 CPUs simultaneously, thus the page faults are triggered on both CPUs. However, it's possible that one CPU (say CPU A) cannot find the reason for the page fault if the other CPU (say CPU B) has changed the page table before the PTE is checked on CPU A. Most of the time, the spurious page faults can be ignored safely. However, if the page fault is for the write access, it's possible that a stale read-only TLB entry exists in the local CPU and needs to be flushed on some architectures. This is called the spurious page fault fixing. In the current kernel, there is spurious fault fixing support for pte, but not for huge pmd because no architectures need it. But in the next patch in the series, we will change the write protection fault handling logic on arm64, so that some stale huge pmd entries may remain in the TLB. These entries need to be flushed via the huge pmd spurious fault fixing mechanism. Signed-off-by: Huang Ying <ying.huang@linux.alibaba.com> Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Zi Yan <ziy@nvidia.com> Cc: Will Deacon <will@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Yang Shi <yang@os.amperecomputing.com> Cc: Christoph Lameter (Ampere) <cl@gentwo.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Barry Song <baohua@kernel.org> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Kevin Brodsky <kevin.brodsky@arm.com> Cc: Yin Fengwei <fengwei_yin@linux.alibaba.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2025-11-19mfd: Kconfig: Drop OF dependency on MFD_MAX5970Andy Shevchenko
This is the only Kconfig symbol that depends on OF while selecting the common driver for several chips. Drop this unneeded dependency and make the component available on non-OF systems along with wider compile test. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://patch.msgid.link/20251111105320.750131-1-andriy.shevchenko@linux.intel.com Signed-off-by: Lee Jones <lee@kernel.org>
2025-11-19mfd: ls2kbmc: Remove unneeded semicolon from ls2k_bmc_recover_pci_data()Chen Ni
Remove unnecessary semicolons reported by Coccinelle/coccicheck and the semantic patch at scripts/coccinelle/misc/semicolon.cocci. Signed-off-by: Chen Ni <nichen@iscas.ac.cn> Link: https://patch.msgid.link/20251111052451.3687740-1-nichen@iscas.ac.cn Signed-off-by: Lee Jones <lee@kernel.org>
2025-11-19lsm: use unrcu_pointer() for current->cred in security_init()Paul Moore
We need to directly allocate the cred's LSM state for the initial task when we initialize the LSM framework. Unfortunately, this results in a RCU related type mismatch, use the unrcu_pointer() macro to handle this a bit more elegantly. The explicit type casting still remains as we need to work around the constification of current->cred in this particular case. Reviewed-by: Xiu Jianfeng <xiujianfeng@huawei.com> Signed-off-by: Paul Moore <paul@paul-moore.com>
2025-11-19drm/xe/vm: Use for_each_tlb_inval() to calculate invalidation fencesMatt Roper
ops_execute() calculates the size of a fence array based on XE_MAX_GT_PER_TILE, while the code that actually fills in the fence array uses a for_each_tlb_inval() iterator. This works out okay today since both approaches come up with the same number of invalidation fences (2: primary GT invalidation + media GT invalidation), but could be problematic in the future if there isn't a 1:1 relationship between TLBs needing invalidation and potential GTs on the tile. Adjust the allocation code to use the same for_each_tlb_inval() counting logic as the code that fills the array to future-proof the code. Reviewed-by: Matthew Brost <matthew.brost@intel.com> Link: https://patch.msgid.link/20251118202604.3715782-2-matthew.d.roper@intel.com Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
2025-11-19printk: Avoid scheduling irq_work on suspendJohn Ogness
Allowing irq_work to be scheduled while trying to suspend has shown to cause problems as some architectures interpret the pending interrupts as a reason to not suspend. This became a problem for printk() with the introduction of NBCON consoles. With every printk() call, NBCON console printing kthreads are woken by queueing irq_work. This means that irq_work continues to be queued due to printk() calls late in the suspend procedure. Avoid this problem by preventing printk() from queueing irq_work once console suspending has begun. This applies to triggering NBCON and legacy deferred printing as well as klogd waiters. Since triggering of NBCON threaded printing relies on irq_work, the pr_flush() within console_suspend_all() is used to perform the final flushing before suspending consoles and blocking irq_work queueing. NBCON consoles that are not suspended (due to the usage of the "no_console_suspend" boot argument) transition to atomic flushing. Introduce a new global variable @console_irqwork_blocked to flag when irq_work queueing is to be avoided. The flag is used by printk_get_console_flush_type() to avoid allowing deferred printing and switch NBCON consoles to atomic flushing. It is also used by vprintk_emit() to avoid klogd waking. Add WARN_ON_ONCE(console_irqwork_blocked) to the irq_work queuing functions to catch any code that attempts to queue printk irq_work during the suspending/resuming procedure. Cc: stable@vger.kernel.org # 6.13.x because no drivers in 6.12.x Fixes: 6b93bb41f6ea ("printk: Add non-BKL (nbcon) console basic infrastructure") Closes: https://lore.kernel.org/lkml/DB9PR04MB8429E7DDF2D93C2695DE401D92C4A@DB9PR04MB8429.eurprd04.prod.outlook.com Signed-off-by: John Ogness <john.ogness@linutronix.de> Reviewed-by: Petr Mladek <pmladek@suse.com> Tested-by: Sherry Sun <sherry.sun@nxp.com> Link: https://patch.msgid.link/20251113160351.113031-3-john.ogness@linutronix.de Signed-off-by: Petr Mladek <pmladek@suse.com>
2025-11-19printk: Allow printk_trigger_flush() to flush all typesJohn Ogness
Currently printk_trigger_flush() only triggers legacy offloaded flushing, even if that may not be the appropriate method to flush for currently registered consoles. (The function predates the NBCON consoles.) Since commit 6690d6b52726 ("printk: Add helper for flush type logic") there is printk_get_console_flush_type(), which also considers NBCON consoles and reports all the methods of flushing appropriate based on the system state and consoles available. Update printk_trigger_flush() to use printk_get_console_flush_type() to appropriately flush registered consoles. Suggested-by: Petr Mladek <pmladek@suse.com> Signed-off-by: John Ogness <john.ogness@linutronix.de> Reviewed-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/stable/20251113160351.113031-2-john.ogness%40linutronix.de Tested-by: Sherry Sun <sherry.sun@nxp.com> Link: https://patch.msgid.link/20251113160351.113031-2-john.ogness@linutronix.de Signed-off-by: Petr Mladek <pmladek@suse.com>
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