[RFC,v2,2/5] ARM: dts: stm32: make the LTDC clock usable by the clock driver
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Message ID 20231008154538.1622772-3-dario.binacchi@amarulasolutions.com
State New
Headers show
Series
  • Support display on stm32f469-disco board
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Commit Message

Dario Binacchi Oct. 8, 2023, 3:44 p.m. UTC 
As described in [1], the "clocks" property contains "a phandle to the
clock device node, an index selecting between gated clocks (0) and other
clocks (1), and an index specifying the clock to use." The current version
of the clock driver, unlike the kernel, is currently able to properly
handle nodes with "clocks" properties with an index set to 0.

This patch is preparatory for future developments that require the use
of the LTDC clock.

[1] Documentation/devicetree/bindings/clock/st,stm32-rcc.txt
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>

---

Changes in v2:
- Add Patrice Chotard's Reviewed-by tag.

 arch/arm/dts/stm32f469-disco-u-boot.dtsi | 4 ++++
 1 file changed, 4 insertions(+)

Patch
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diff --git a/arch/arm/dts/stm32f469-disco-u-boot.dtsi b/arch/arm/dts/stm32f469-disco-u-boot.dtsi
index c07e2022e4a8..dcc70369cd0d 100644
--- a/arch/arm/dts/stm32f469-disco-u-boot.dtsi
+++ b/arch/arm/dts/stm32f469-disco-u-boot.dtsi
@@ -134,6 +134,10 @@ 
 	bootph-all;
 };
 
+&ltdc {
+	clocks = <&rcc 0 STM32F4_APB2_CLOCK(LTDC)>;
+};
+
 &pinctrl {
 	bootph-all;