Thread (6 messages) 6 messages, 4 authors, 2015-08-28

Re: [PATCH] ARM: dts: use vqmmc-supply of emmc/sd for exynos4412-odroid-common

From: Krzysztof Kozlowski <hidden>
Date: 2015-08-27 12:26:52
Also in: linux-samsung-soc, lkml

W dniu 27.08.2015 o 18:29, Jaehoon Chung pisze:
quoted hunk ↗ jump to hunk
Currently vmmc's property is wrong.
If it needs to control two supplies, then it has to use vmmc/vqmmc-supply.
(Card supply power and I/O Line supply Power.)

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
---
 arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
index ca7d168..4ddabfd 100644
--- a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
+++ b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
@@ -461,10 +461,10 @@
 &mshc_0 {
 	pinctrl-0 = <&sd4_clk &sd4_cmd &sd4_bus4 &sd4_bus8>;
 	pinctrl-names = "default";
-	vmmc-supply = <&ldo20_reg &buck8_reg>;
+	vmmc-supply = <&ldo20_reg>;
+	vqmmc-supply = <&buck8_reg>;
Shouldn't this be reversed? LDO20 has 1.8V and it goes to MMC connector,
so it should be VQMMC?

In the same time I can't find on schematics where BUCK8 goes...

The SDHCI_2 node below looks good.

Best regards,
Krzysztof
quoted hunk ↗ jump to hunk
 	mmc-pwrseq = <&emmc_pwrseq>;
 	status = "okay";
-
 	num-slots = <1>;
 	broken-cd;
 	card-detect-delay = <200>;
@@ -485,7 +485,8 @@
 	bus-width = <4>;
 	pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_bus4>;
 	pinctrl-names = "default";
-	vmmc-supply = <&ldo4_reg &ldo21_reg>;
+	vmmc-supply = <&ldo21_reg>;
+	vqmmc-supply = <&ldo4_reg>;
 	cd-gpios = <&gpk2 2 0>;
 	cd-inverted;
 	status = "okay";
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