linux-kernel - [PATCHv2] ARM: dts: use vmmc-supply of emmc/sd for exynos5422-odroidxu3

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Message-Id: <1445345793-5189-1-git-send-email-linux.amoon@gmail.com>
Date:	Tue, 20 Oct 2015 12:56:33 +0000
From:	Anand Moon <linux.amoon@...il.com>
To:	Kukjin Kim <kgene@...nel.org>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Javier Martinez Canillas <javier@....samsung.com>
Cc:	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
	Anand Moon <linux.amoon@...il.com>
Subject: [PATCHv2] ARM: dts: use vmmc-supply of emmc/sd for exynos5422-odroidxu3

Changes need for host controller to detect UHS-I highspeed cards.
Changes in VDDQ_MMC2 voltage range help scale
the required voltage to detect and load the microSD cards.

Signed-off-by: Anand Moon <linux.amoon@...il.com>
---
Changes based on git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung.git v4.4-next/dt-samsung branch

Changes:
Drop the ranp_delay for LDO9.

Thanks to : Krzysztof, Doug Anderson, Jaehoon Chung for helping
me out figure out the mmc core requirement.

Also drop the previous changes:
use cd-gpio method to detect sd-card.
Added UHS-I bus speed support.

[    4.713553] random: nonblocking pool is initialized
[    4.718423] 14530000.hdmi supply hdmi-en not found, using dummy regulator
[    4.726206] exynos-drm exynos-drm: bound 14400000.fimd (ops fimd_component_ops)
[    4.732555] exynos-drm exynos-drm: bound 14450000.mixer (ops mixer_component_ops)
[    4.740180] exynos-drm exynos-drm: bound 14530000.hdmi (ops hdmi_component_ops)
[    4.746936] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[    4.753428] [drm] No driver support for vblank timestamp query.
[    4.940794] Console: switching to colour frame buffer device 274x77
[    4.995344] exynos-drm exynos-drm: fb0:  frame buffer device
[    5.024573] [drm] Initialized exynos 1.0.0 20110530 on minor 0
[    5.031164] exynos-dwc3 usb@...00000: no suspend clk specified
[    5.054571] usb 2-1: new full-speed USB device number 2 using exynos-ohci
[    5.159527] dwmmc_exynos 12220000.mmc: Busy; trying anyway
[    5.163705] mmc_host mmc1: Timeout sending command (cmd 0x202000 arg 0x0 status 0x0)
---
 arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi b/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi
index 1af5bdc..a4be3e0 100644
--- a/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi
+++ b/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi
@@ -182,9 +182,10 @@
 
 			ldo13_reg: LDO13 {
 				regulator-name = "vdd_ldo13";
-				regulator-min-microvolt = <2800000>;
+				regulator-min-microvolt = <1800000>;
 				regulator-max-microvolt = <2800000>;
 				regulator-always-on;
+				regulator-ramp-delay = <12000>;
 			};
 
 			ldo15_reg: LDO15 {
@@ -213,6 +214,7 @@
 				regulator-min-microvolt = <2800000>;
 				regulator-max-microvolt = <2800000>;
 				regulator-always-on;
+				regulator-ramp-delay = <12000>;
 			};
 
 			ldo24_reg: LDO24 {
@@ -338,6 +340,7 @@
 	samsung,dw-mshc-ddr-timing = <0 2>;
 	samsung,dw-mshc-hs400-timing = <0 2>;
 	samsung,read-strobe-delay = <90>;
+	vmmc-supply = <&ldo3_reg>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&sd0_clk &sd0_cmd &sd0_bus1 &sd0_bus4 &sd0_bus8 &sd0_cd &sd0_rclk>;
 	bus-width = <8>;
@@ -355,6 +358,8 @@
 	pinctrl-names = "default";
 	pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_bus1 &sd2_bus4>;
 	bus-width = <4>;
+	vmmc-supply = <&ldo19_reg>;
+	vqmmc-supply = <&ldo13_reg>;
 	cap-sd-highspeed;
 };
 
-- 
2.1.4

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