linux-kernel - [PATCH 6/8] arm64: dts: ti: k3-j7200-common-proc-board: Add support SD card UHS modes

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Message-ID: <20201001190541.6364-7-faiz_abbas@ti.com>
Date:   Fri, 2 Oct 2020 00:35:39 +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 6/8] arm64: dts: ti: k3-j7200-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-j7200-common-proc-board.dts     | 32 +++++++++++++++++++
 arch/arm64/boot/dts/ti/k3-j7200-main.dtsi     |  1 -
 2 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts
index 50d330245a42..02112c2a63e9 100644
--- a/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts
@@ -7,12 +7,36 @@
 
 #include "k3-j7200-som-p0.dtsi"
 #include <dt-bindings/net/ti-dp83867.h>
+#include <dt-bindings/gpio/gpio.h>
 
 / {
 	chosen {
 		stdout-path = "serial2:115200n8";
 		bootargs = "console=ttyS2,115200n8 earlycon=ns16550a,mmio32,0x02800000";
 	};
+
+	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;
+		gpios = <&exp2 2 GPIO_ACTIVE_HIGH>;
+	};
+
+	vdd_sd_dv: gpio-regulator-vdd-sd-dv {
+		compatible = "regulator-gpio";
+		regulator-name = "vdd_sd_dv";
+		pinctrl-names = "default";
+		pinctrl-0 = <&vdd_sd_dv_pins_default>;
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+		gpios = <&main_gpio0 55 GPIO_ACTIVE_HIGH>;
+		states = <1800000 0x0
+			  3300000 0x1>;
+	};
 };
 
 &wkup_pmx0 {
@@ -68,6 +92,12 @@
 			J721E_IOPAD(0xe4, PIN_INPUT, 8) /* (V1) TIMER_IO0.MMC1_SDCD */
 		>;
 	};
+
+	vdd_sd_dv_pins_default: vdd_sd_dv_pins_default {
+		pinctrl-single,pins = <
+			J721E_IOPAD(0xd0, PIN_INPUT, 7) /* (T5) SPI0_D1.GPIO0_55 */
+		>;
+	};
 };
 
 &wkup_uart0 {
@@ -196,6 +226,8 @@
 
 &main_sdhci1 {
 	/* SD card */
+	vmmc-supply = <&vdd_mmc1>;
+	vqmmc-supply = <&vdd_sd_dv>;
 	pinctrl-0 = <&main_mmc1_pins_default>;
 	pinctrl-names = "default";
 	ti,driver-strength-ohm = <50>;
diff --git a/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi
index f21f22237e0f..7307a94f7f3e 100644
--- a/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi
@@ -392,7 +392,6 @@
 		ti,otap-del-sel-sdr50 = <0xc>;
 		ti,otap-del-sel-sdr104 = <0x5>;
 		ti,otap-del-sel-ddr50 = <0xc>;
-		no-1-8-v;
 		dma-coherent;
 	};
 
-- 
2.17.1