kernel.git/drivers/clk/mmp, branch linux-5.5.y

clk: mmp2: Fix the order of timer mux parents

2020-01-06T17:19:07Z

Determined empirically, no documentation is available. The OLPC XO-1.75 laptop used parent 1, that one being VCTCXO/4 (65MHz), but thought it's a VCTCXO/2 (130MHz). The mmp2 timer driver, not knowing what is going on, ended up just dividing the rate as of commit f36797ee4380 ("ARM: mmp/mmp2: dt: enable the clock")' Link: https://lore.kernel.org/r/20191218190454.420358-3-lkundrak@v3.sk Signed-off-by: Lubomir Rintel Acked-by: Stephen Boyd Signed-off-by: Olof Johansson

ARM: mmp: add support for MMP3 SoC

2019-10-17T14:36:11Z

Similar to MMP2, which this patch is based on. Known differencies from MMP2 are: * Two PJ4B cores instead of one PJ4 * Tauros 3 L2 cache controller instead of Tauros 2 * A GIC interrupt controller optionally used instead of the MMP one * A TWD local timer * Different USB2 PHY * A USB3 SS controller * More interrupt muxes Hard to tell what else is different, because documentation is not available. Signed-off-by: Lubomir Rintel

clk: mmp: frac: Remove set but not used variable 'prev_rate'

2019-06-07T18:54:48Z

Fixes gcc '-Wunused-but-set-variable' warning: drivers/clk/mmp/clk-frac.c: In function clk_factor_set_rate: drivers/clk/mmp/clk-frac.c:81:16: warning: variable prev_rate set but not used [-Wunused-but-set-variable] It's never used and can be removed. Signed-off-by: YueHaibing Signed-off-by: Stephen Boyd

clk: Remove CLK_IS_BASIC clk flag

2019-04-26T17:40:49Z

This flag was historically used to indicate that a clk is a "basic" type of clk like a mux, divider, gate, etc. This never turned out to be very useful though because it was hard to cleanly split "basic" clks from other clks in a system. This one flag was a way for type introspection and it just didn't scale. If anything, it was used by the TI clk driver to indicate that a clk_hw wasn't contained in the SoC specific clk structure. We can get rid of this define now that TI is finding those clks a different way. Cc: Tero Kristo Cc: Ralf Baechle Cc: Paul Burton Cc: James Hogan Cc: Cc: Thierry Reding Cc: Kevin Hilman Cc: Cc: Acked-by: Thierry Reding Signed-off-by: Stephen Boyd

clk: mmp2: separate LCDC peripheral clk form the display clock

2019-02-21T21:52:02Z

These are in fact two clocks, they shouldn't be exposed as one. One is required for accessing LCD controller registers (peripheral clock), while other (AXI clock) can be optionally used as a pixel clock source for the panel. LCDC can alternatively use different clocks than the Display 1 AXI clock for generating the pixel clock: the second AXI clock (fixed in this commit too), the HDMI PLL, or the AXI bus clock. They should really be controlled independently. Link: https://lists.freedesktop.org/archives/dri-devel/2019-January/203975.html Signed-off-by: Lubomir Rintel Signed-off-by: Stephen Boyd

Revert "clk: mmp2: add SP clock"

2019-01-24T18:55:32Z

It seems that the kernel has no business managing this clock: once the SP clock is disabled, it's not sufficient to just enable in order to bring the SP core back up. Just let the firmware keep it enabled and don't expose it to drivers. This reverts commit fc27c2394d96fd19854b7e2d3f0e60df0d86fc90. Link: https://lore.kernel.org/lkml/154783267051.169631.3197836544646625747@swboyd.mtv.corp.google.com/ Signed-off-by: Lubomir Rintel Signed-off-by: Stephen Boyd

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

2019-01-03T02:56:59Z

Pull input updates from Dmitry Torokhov: "A tiny pull request this merge window unfortunately, should get more material in for the next release: - new driver for Raspberry Pi's touchscreen (firmware interface) - miscellaneous input driver fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: elan_i2c - add ACPI ID for touchpad in ASUS Aspire F5-573G Input: atmel_mxt_ts - don't try to free unallocated kernel memory Input: drv2667 - fix indentation issues Input: touchscreen - fix coding style issue Input: add official Raspberry Pi's touchscreen driver Input: nomadik-ske-keypad - fix a loop timeout test Input: rotary-encoder - don't log EPROBE_DEFER to kernel log Input: olpc_apsp - remove set but not used variable 'np' Input: olpc_apsp - enable the SP clock Input: olpc_apsp - check FIFO status on open(), not probe() Input: olpc_apsp - drop CONFIG_OLPC dependency clk: mmp2: add SP clock dt-bindings: marvell,mmp2: Add clock id for the SP clock Input: ad7879 - drop platform data support

clk: mmp: Off by one in mmp_clk_add()

2018-12-03T17:54:48Z

The > comparison should be >= or we write one element beyond the end of the unit->clk_table[] array. (The unit->clk_table[] array is allocated in the mmp_clk_init() function and it has unit->nr_clks elements). Fixes: 4661fda10f8b ("clk: mmp: add basic support functions for DT support") Signed-off-by: Dan Carpenter Signed-off-by: Stephen Boyd

clk: mmp2: add SP clock

2018-11-15T19:14:36Z

The "security processor", sometimes referred to as "wireless trusted module" or "generic encrypt unit" is a low-power core present on MMP2, that has nothing to do with security, wireless, trust or encryption. On an OLPC machine it runs CForth and serves as a keyboard controller: http://dev.laptop.org/git/users/wmb/cforth/tree/src/app/arm-xo-1.75/ps2.fth The register address was obtained from the OLPC kernel, since the datasheet seems to be the Marvell's most important business secret. Signed-off-by: Lubomir Rintel Acked-by: Stephen Boyd Acked-by: Pavel Machek Signed-off-by: Dmitry Torokhov

clk: mmp2: fix the clock id for sdh2_clk and sdh3_clk

2018-10-17T16:02:31Z

A typo that makes it impossible to get the correct clocks for MMP2_CLK_SDH2 and MMP2_CLK_SDH3. Signed-off-by: Lubomir Rintel Fixes: 1ec770d92a62 ("clk: mmp: add mmp2 DT support for clock driver") Signed-off-by: Stephen Boyd