kernel.git/drivers/clk/xilinx, branch linux-6.16.y

clk: clocking-wizard: Fix the round rate handling for versal

2025-08-15T14:39:12Z

[ Upstream commit 7f5e9ca0a424af44a708bb4727624d56f83ecffa ] Fix the `clk_round_rate` implementation for Versal platforms by calling the Versal-specific divider calculation helper. The existing code used the generic divider routine, which results in incorrect round rate. Fixes: 7681f64e6404 ("clk: clocking-wizard: calculate dividers fractional parts") Signed-off-by: Shubhrajyoti Datta Link: https://lore.kernel.org/r/20250625054114.28273-1-shubhrajyoti.datta@amd.com Signed-off-by: Stephen Boyd Signed-off-by: Sasha Levin

clk: xilinx: vcu: unregister pll_post only if registered correctly

2025-08-15T14:38:59Z

[ Upstream commit 3b0abc443ac22f7d4f61ddbbbbc5dbb06c87139d ] If registration of pll_post is failed, it will be set to NULL or ERR, unregistering same will fail with following call trace: Unable to handle kernel NULL pointer dereference at virtual address 008 pc : clk_hw_unregister+0xc/0x20 lr : clk_hw_unregister_fixed_factor+0x18/0x30 sp : ffff800011923850 ... Call trace: clk_hw_unregister+0xc/0x20 clk_hw_unregister_fixed_factor+0x18/0x30 xvcu_unregister_clock_provider+0xcc/0xf4 [xlnx_vcu] xvcu_probe+0x2bc/0x53c [xlnx_vcu] Fixes: 4472e1849db7 ("soc: xilinx: vcu: make pll post divider explicit") Signed-off-by: Rohit Visavalia Link: https://lore.kernel.org/r/20250210113614.4149050-2-rohit.visavalia@amd.com Signed-off-by: Stephen Boyd Signed-off-by: Sasha Levin

clk: clocking-wizard: calculate dividers fractional parts

2025-01-07T19:50:07Z

Calculate dividers fractional parts to optimally modulate output frequency. Clocking wizard supports having multiplier m and divisors d and o. Currently the fractional parts of m and o are not utilised. For the pixel clock usecases a higher accuracy is needed.. Adding support for m and o to have fractional values. Co-developed-by: Anatoliy Klymenko Signed-off-by: Anatoliy Klymenko Signed-off-by: Shubhrajyoti Datta Tested-by: Anatoliy Klymenko Link: https://lore.kernel.org/r/20250106082937.29555-1-shubhrajyoti.datta@amd.com Signed-off-by: Stephen Boyd

clk: clocking-wizard: move dynamic reconfig setup behind flag

2024-10-09T23:38:56Z

Xilinx clocking wizard IP core's dynamic reconfiguration support is optionally enabled at build time. Use the new boolean devicetree property to indicate whether the hardware supports this feature or not. Signed-off-by: Harry Austen Link: https://lore.kernel.org/r/20240913191037.2690-7-hpausten@protonmail.com Signed-off-by: Stephen Boyd

clk: clocking-wizard: move clock registration to separate function

2024-10-09T23:38:56Z

Provide clear separation of dynamic reconfiguration logic, by moving its setup procedure to its own dedicated function. Signed-off-by: Harry Austen Link: https://lore.kernel.org/r/20240913191037.2690-5-hpausten@protonmail.com Signed-off-by: Stephen Boyd

clk: clocking-wizard: use devres versions of clk_hw API

2024-10-09T23:38:55Z

Use device managed versions of the clk_hw API, entirely removing the need for the driver's remove() callback and greatly simplifying the probe() function's error paths. Signed-off-by: Harry Austen Link: https://lore.kernel.org/r/20240913191037.2690-4-hpausten@protonmail.com Signed-off-by: Stephen Boyd

clk: clocking-wizard: use newer clk_hw API

2024-10-09T23:38:24Z

Utilise clock provider API with struct clk_hw instances instead of the consumer-side struct clk. Signed-off-by: Harry Austen Link: https://lore.kernel.org/r/20240913191037.2690-3-hpausten@protonmail.com Signed-off-by: Stephen Boyd

clk: clocking-wizard: simplify probe/remove with devres helpers

2024-10-09T23:38:24Z

Remove need to do various operations in remove callback and error paths by utilising device managed versions of clock and notifier APIs. Signed-off-by: Harry Austen Reviewed-by: Stephen Boyd Link: https://lore.kernel.org/r/20240913191037.2690-2-hpausten@protonmail.com Signed-off-by: Stephen Boyd

clk: Switch back to struct platform_driver::remove()

2024-09-21T21:12:05Z

After commit 0edb555a65d1 ("platform: Make platform_driver::remove() return void") .remove() is (again) the right callback to implement for platform drivers. Convert all clk drivers to use .remove(), with the eventual goal to drop struct platform_driver::remove_new(). As .remove() and .remove_new() have the same prototypes, conversion is done by just changing the structure member name in the driver initializer. Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20240909144026.870565-2-u.kleine-koenig@baylibre.com Acked-by: Geert Uytterhoeven # renesas Signed-off-by: Stephen Boyd

clk: xilinx: Constify struct regmap_config

2024-07-08T20:32:26Z

`vcu_settings_regmap_config` is not modified and can be declared as const to move its data to a read-only section. Signed-off-by: Javier Carrasco Link: https://lore.kernel.org/r/20240703-clk-const-regmap-v1-10-7d15a0671d6f@gmail.com Signed-off-by: Stephen Boyd