TI's AM62 SoC can optionally provide two audio reference clocks (AUDIO_REFCLKx) to external peripherals. By default the reference clock is looped-back inside the SoC to a mux that goes to McASP AHCLK, but can optionally be enabled as an output to peripherals outside the SoC by setting a bit through CTRL_MMR registers. This patch series extends the existing syscon-clk driver to support the audio reference clock, and also adds new device tree bindings documentation. Please apply this on-top-of Andrew's series [1] removing the unnecessary dependency on syscon compatible. [1]: https://lore.kernel.org/linux-clk/20230516184626.154892-1-afd@xxxxxx/#t Signed-off-by: Jai Luthra <j-luthra@xxxxxx> --- Changes in v3: - Add missing headers for kasprintf/kfree in [PATCH 2/2] - Add Conor's R-by for [PATCH 1/2] - Link to v2: https://lore.kernel.org/r/20230515-refclk-v2-0-fc9ff08826f5@xxxxxx Changes in v2: - Removed "syscon" compatible and rebased on top of [1] - Moved reg above other properties in bindings yaml - Link to v1: https://lore.kernel.org/r/20230515-refclk-v1-0-5e89f01d6733@xxxxxx Range diff from v2: 1: f1bb6a34efce ! 1: db84010f924d dt-bindings: clock: Add binding documentation for TI Audio REFCLK @@ Commit message Add DT bindings for TI's audio reference clocks (REFCLK) present on AM62 SoC. + Reviewed-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx> Signed-off-by: Jai Luthra <j-luthra@xxxxxx> ## Documentation/devicetree/bindings/clock/ti,am62-audio-refclk.yaml (new) ## 2: bb1b58178bbd ! 2: 06186242572b clk: keystone: syscon-clk: Add support for audio refclk @@ Commit message Signed-off-by: Jai Luthra <j-luthra@xxxxxx> ## drivers/clk/keystone/syscon-clk.c ## +@@ + */ + + #include <linux/clk-provider.h> ++#include <linux/kernel.h> + #include <linux/mfd/syscon.h> + #include <linux/module.h> + #include <linux/platform_device.h> + #include <linux/regmap.h> ++#include <linux/slab.h> + + struct ti_syscon_gate_clk_priv { + struct clk_hw hw; @@ drivers/clk/keystone/syscon-clk.c: static const struct clk_ops ti_syscon_gate_clk_ops = { static struct clk_hw --- Jai Luthra (2): dt-bindings: clock: Add binding documentation for TI Audio REFCLK clk: keystone: syscon-clk: Add support for audio refclk .../bindings/clock/ti,am62-audio-refclk.yaml | 43 +++++++++++++++++++++ drivers/clk/keystone/syscon-clk.c | 45 +++++++++++++++++++--- 2 files changed, 83 insertions(+), 5 deletions(-) --- base-commit: f9547f8abff52dfb21985057f10744558a7e4cc8 change-id: 20230515-refclk-5b544d314c23 Best regards, -- Jai Luthra <j-luthra@xxxxxx>
