Thread (15 messages) 15 messages, 3 authors, 2024-02-01

Re: [PATCH v2 3/3] arm64: dts: exynos: Add SPI nodes for Exynos850

From: Sam Protsenko <semen.protsenko@linaro.org>
Date: 2024-02-01 14:22:15
Also in: linux-arm-kernel, linux-clk, linux-samsung-soc, lkml

On Thu, Feb 1, 2024 at 4:31 AM Krzysztof Kozlowski
[off-list ref] wrote:
On 25/01/2024 02:38, Sam Protsenko wrote:
quoted
Some USI blocks can be configured as SPI controllers. Add corresponding
SPI nodes to Exynos850 SoC device tree.

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
---
Changes in v2:
  - Sorted pinctrl properties properly

 arch/arm64/boot/dts/exynos/exynos850.dtsi | 54 +++++++++++++++++++++++
 1 file changed, 54 insertions(+)
diff --git a/arch/arm64/boot/dts/exynos/exynos850.dtsi b/arch/arm64/boot/dts/exynos/exynos850.dtsi
index 618bc674896e..ca257da74b50 100644
--- a/arch/arm64/boot/dts/exynos/exynos850.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynos850.dtsi
@@ -738,6 +738,24 @@ usi_spi_0: usi@139400c0 {
                               <&cmu_peri CLK_GOUT_SPI0_IPCLK>;
                      clock-names = "pclk", "ipclk";
                      status = "disabled";
+
+                     spi_0: spi@13940000 {
+                             compatible = "samsung,exynos850-spi";
+                             reg = <0x13940000 0x30>;
+                             interrupts = <GIC_SPI 221 IRQ_TYPE_LEVEL_HIGH>;
+                             pinctrl-0 = <&spi0_pins>;
+                             pinctrl-names = "default";
+                             clocks = <&cmu_peri CLK_GOUT_SPI0_IPCLK>,
+                                      <&cmu_peri CLK_GOUT_SPI0_PCLK>;
+                             clock-names = "spi_busclk0", "spi";
+                             samsung,spi-src-clk = <0>;
+                             dmas = <&pdma0 5>, <&pdma0 4>;
+                             dma-names = "tx", "rx";
+                             num-cs = <1>;
For the future: please keep properties sorted by name, so clocks+name,
dmas+name, interrupts, pinctrl+name, more-or-less matching DTS coding
style. address/size cells can go to the end.
Noted, thanks! So IIUC, basically follow the order of properties
described at [1], but keep the standard/common properties block
sorted, and then keep vendor properties sorted, right?

[1] Documentation/devicetree/bindings/dts-coding-style.rst
Best regards,
Krzysztof
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