Re: [PATCH 2/2] ARM: shmobile: silk: add SDHI0/1 DT support

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Hello.

On 02/22/2015 03:45 AM, Magnus Damm wrote:

Define the SILK board dependent parts of the SDHI0  (connected to SDIO Wi-Fi
chip)  and SDHI1  (connected to micro-SD slot) device nodes along with the
necessary voltage regulators.

Based on the original patch by Vladimir Barinov
<vladimir.barinov@xxxxxxxxxxxxxxxxxx>.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>

Thanks for your patch. One question - above you write that SDHI1 is micro-SD...

   Yes, have double-checked now.

@@ -100,3 +159,25 @@
         non-removable;
         status = "okay";
  };
+
+&sdhi0 {
+       pinctrl-0 = <&sdhi0_pins>;
+       pinctrl-names = "default";
+
+       vmmc-supply = <&vcc_sdhi0>;
+       vqmmc-supply = <&vccq_sdhi0>;
+       cd-gpios = <&gpio6 6 GPIO_ACTIVE_LOW>;
+       wp-gpios = <&gpio6 7 GPIO_ACTIVE_LOW>;
+       status = "okay";
+};
+
+&sdhi1 {
+       pinctrl-0 = <&sdhi1_pins>;
+       pinctrl-names = "default";
+
+       vmmc-supply = <&vcc_sdhi1>;
+       vqmmc-supply = <&vccq_sdhi1>;
+       cd-gpios = <&gpio6 14 GPIO_ACTIVE_LOW>;
+       wp-gpios = <&gpio6 15 GPIO_ACTIVE_LOW>;
+       status = "okay";
+};

... however here the WP signal is assigned.

I believe micro-SD doesn't use the WP signal, so either I'm wrong or
the patch needs to be updated to reflect reality. =)

Both seem correct: SD1_WP signal is just tied to VCCQ_SD1. Do you think we should still drop it?

Also, I doubt that an on-board SDIO module makes use of CD and/or WP signals?

   Those two are tied to VCCQ_SD0 as well. Do you think we should drop them?

Thanks,
/ magnus

WBR, Sergei

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