Re: [PATCH v2 1/6] riscv: dts: sophgo: Put sdhci compatible in dt of specific SoC

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On 6/17/24 1:58 AM, Yixun Lan wrote:
Hi

On 18:47 Wed 12 Jun     , Inochi Amaoto wrote:
On Wed, Jun 12, 2024 at 10:02:31AM GMT, Thomas Bonnefille wrote:
Remove SDHCI compatible for CV1800b from common dtsi file to put it in
the specific dtsi file of the CV1800b.
This commits aims at following the same guidelines as in the other nodes
of the CV18XX family.
is there any URL of guideline? or did I miss anything
couldn't find any discussion about this in v1


Not explicitly, the fact is that I had to use a specific compatible on SG2002 for the sdhci (it is already defined mainline), I had to choose between :

1. cv18xx.dtsi : compatible cv1800b-dwcmshc
   cv1800b.dtsi : no redefined compatible
   sg2002.dtsi : overwrite the previous compatible to use sg2002-dwcmshc

2. cv18xx.dtsi : no compatible
   cv1800b.dtsi : compatible for cv1800b-dwcmshc
   sg2002.dtsi : compatible for sg2002-dwcmshc

As in the plic and clint controllers, the second option was chosen I consider this as a "guideline" and reformat the dtsis accordingly.


Signed-off-by: Thomas Bonnefille <thomas.bonnefille@xxxxxxxxxxx>
---
  arch/riscv/boot/dts/sophgo/cv1800b.dtsi | 4 ++++
  arch/riscv/boot/dts/sophgo/cv18xx.dtsi  | 1 -
  2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
index ec9530972ae2..b9cd51457b4c 100644
--- a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
+++ b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
@@ -25,3 +25,7 @@ &clint {
  &clk {
  	compatible = "sophgo,cv1800-clk";
  };
+
+&sdhci0 {
+	compatible = "sophgo,cv1800b-dwcmshc";
+};
diff --git a/arch/riscv/boot/dts/sophgo/cv18xx.dtsi b/arch/riscv/boot/dts/sophgo/cv18xx.dtsi
index 891932ae470f..7247c7c3013c 100644
--- a/arch/riscv/boot/dts/sophgo/cv18xx.dtsi
+++ b/arch/riscv/boot/dts/sophgo/cv18xx.dtsi
@@ -288,7 +288,6 @@ uart4: serial@41c0000 {
  		};
sdhci0: mmc@4310000 {
-			compatible = "sophgo,cv1800b-dwcmshc";
  			reg = <0x4310000 0x1000>;
  			interrupts = <36 IRQ_TYPE_LEVEL_HIGH>;
  			clocks = <&clk CLK_AXI4_SD0>,

--
2.45.2


Hi, Jisheng,

Is this change necessary? IIRC, the sdhci is the same across
the whole series.
I tend to agree with Inochi here, if it's same across all SoC, then no bother to
split, it will cause more trouble to maintain..


To be honest, I agree with this to, but as a specific compatible for the SG2002 was created in commit 849e81817b9b, I thought that the best practice was to use it.


Regards,
Inochi





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