linux-kernel - [PATCH 5/8] arm64: dts: ti: k3-j721e-common-proc-board: Add support SD card UHS modes

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Date:   Fri, 2 Oct 2020 00:35:38 +0530
From:   Faiz Abbas <faiz_abbas@...com>
To:     <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
CC:     <will@...nel.org>, <robh+dt@...nel.org>, <nm@...com>,
        <t-kristo@...com>, <faiz_abbas@...com>
Subject: [PATCH 5/8] arm64: dts: ti: k3-j721e-common-proc-board: Add support SD card UHS modes

Add support for UHS modes for the SD card connected at sdhci1. This
involves adding regulators for voltage switching and power cycling the
SD card and removing the no-1-8-v property.

Signed-off-by: Faiz Abbas <faiz_abbas@...com>
---
 .../dts/ti/k3-j721e-common-proc-board.dts     | 35 ++++++++++++++++++-
 arch/arm64/boot/dts/ti/k3-j721e-main.dtsi     |  2 --
 2 files changed, 34 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts
index 52e121155563..0df9e6117b7c 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts
@@ -67,6 +67,31 @@
 		regulator-boot-on;
 	};
 
+	vdd_mmc1: fixedregulator-sd {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd_mmc1";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+		enable-active-high;
+		vin-supply = <&vsys_3v3>;
+		gpio = <&exp2 2 GPIO_ACTIVE_HIGH>;
+	};
+
+	vdd_sd_dv_alt: gpio-regulator-TLV71033 {
+		compatible = "regulator-gpio";
+		pinctrl-names = "default";
+		pinctrl-0 = <&vdd_sd_dv_alt_pins_default>;
+		regulator-name = "tlv71033";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+		vin-supply = <&vsys_5v0>;
+		gpios = <&main_gpio0 117 GPIO_ACTIVE_HIGH>;
+		states = <1800000 0x0
+			  3300000 0x1>;
+	};
+
 	sound0: sound@0 {
 		compatible = "ti,j721e-cpb-audio";
 		model = "j721e-cpb";
@@ -106,7 +131,13 @@
 		>;
 	};
 
-	main_usbss0_pins_default: main-usbss0-pins-default {
+	vdd_sd_dv_alt_pins_default: vdd_sd_dv_alt_pins_default {
+		pinctrl-single,pins = <
+			J721E_IOPAD(0x1d8, PIN_INPUT, 7) /* (W4) SPI1_CS1.GPIO0_117 */
+		>;
+	};
+
+	main_usbss0_pins_default: main_usbss0_pins_default {
 		pinctrl-single,pins = <
 			J721E_IOPAD(0x290, PIN_OUTPUT, 0) /* (U6) USB0_DRVVBUS */
 			J721E_IOPAD(0x210, PIN_INPUT, 7) /* (W3) MCAN1_RX.GPIO1_3 */
@@ -295,6 +326,8 @@
 
 &main_sdhci1 {
 	/* SD/MMC */
+	vmmc-supply = <&vdd_mmc1>;
+	vqmmc-supply = <&vdd_sd_dv_alt>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&main_mmc1_pins_default>;
 	ti,driver-strength-ohm = <50>;
diff --git a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
index 630b195cbc8a..a38d772b8356 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
@@ -1109,7 +1109,6 @@
 		ti,trm-icp = <0x8>;
 		ti,clkbuf-sel = <0x7>;
 		dma-coherent;
-		no-1-8-v;
 	};
 
 	main_sdhci2: sdhci@...8000 {
@@ -1130,7 +1129,6 @@
 		ti,trm-icp = <0x8>;
 		ti,clkbuf-sel = <0x7>;
 		dma-coherent;
-		no-1-8-v;
 	};
 
 	usbss0: cdns-usb@...4000 {
-- 
2.17.1