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Message-ID: <20230320051304.2730692-4-vigneshr@ti.com>
Date: Mon, 20 Mar 2023 10:43:04 +0530
From: Vignesh Raghavendra <vigneshr@...com>
To: Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>,
Tero Kristo <kristo@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
CC: <linux-arm-kernel@...ts.infradead.org>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH 3/3] arm64: ti: dts: Add support for AM62x LP SK
From: Anand Gadiyar <gadiyar@...com>
The AM62x LP SK board is similar to the AM62x SK board, but has some
not-so-minor changes that requires different device tree.
The differences are mainly:
- AM62x SoC in the AMC package that meets AECQ100 automotive standard.
- LPDDR4 versus DDR4 on the AM62x SK.
- TPS65219 PMIC instead of discrete regulators.
- IO expander pin names are wired differently.
- Second ethernet port is currently disabled as the boards do not have
the part physically installed.
- OSPI NAND vs OSPI NOR.
- No WLAN chip instead a SDIO M.2 connector.
Signed-off-by: Anand Gadiyar <gadiyar@...com>
[vigneshr@...com: Add PMIC node]
Signed-off-by: Vignesh Raghavendra <vigneshr@...com>
---
arch/arm64/boot/dts/ti/Makefile | 1 +
arch/arm64/boot/dts/ti/k3-am62x-lp-sk.dts | 227 ++++++++++++++++++++++
2 files changed, 228 insertions(+)
create mode 100644 arch/arm64/boot/dts/ti/k3-am62x-lp-sk.dts
diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 6acd12409d59..6f740a58474f 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -10,6 +10,7 @@
# Boards with AM62x SoC
dtb-$(CONFIG_ARCH_K3) += k3-am625-sk.dtb
+dtb-$(CONFIG_ARCH_K3) += k3-am62x-lp-sk.dtb
# Boards with AM62Ax SoC
dtb-$(CONFIG_ARCH_K3) += k3-am62a7-sk.dtb
diff --git a/arch/arm64/boot/dts/ti/k3-am62x-lp-sk.dts b/arch/arm64/boot/dts/ti/k3-am62x-lp-sk.dts
new file mode 100644
index 000000000000..97ea602e53d5
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am62x-lp-sk.dts
@@ -0,0 +1,227 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * AM62x LP SK: https://www.ti.com/tool/SK-AM62-LP
+ *
+ * Copyright (C) 2021-2023 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+
+#include "k3-am62x-sk-common.dtsi"
+
+/ {
+ compatible = "ti,am62x-lp-sk", "ti,am625";
+ model = "Texas Instruments AM62x LP SK";
+
+ vmain_pd: regulator-0 {
+ /* TPS65988 PD CONTROLLER OUTPUT */
+ compatible = "regulator-fixed";
+ regulator-name = "vmain_pd";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ vcc_5v0: regulator-1 {
+ /* Output of TPS630702RNMR */
+ compatible = "regulator-fixed";
+ regulator-name = "vcc_5v0";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+ vin-supply = <&vmain_pd>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ vcc_3v3_sys: regulator-2 {
+ /* output of LM61460-Q1 */
+ compatible = "regulator-fixed";
+ regulator-name = "vcc_3v3_sys";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ vin-supply = <&vmain_pd>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ vdd_mmc1: regulator-3 {
+ /* TPS22918DBVR */
+ compatible = "regulator-fixed";
+ regulator-name = "vdd_mmc1";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ enable-active-high;
+ vin-supply = <&vcc_3v3_sys>;
+ gpio = <&exp1 3 GPIO_ACTIVE_HIGH>;
+ };
+
+ vddshv_sdio: regulator-4 {
+ compatible = "regulator-gpio";
+ regulator-name = "vddshv_sdio";
+ pinctrl-names = "default";
+ pinctrl-0 = <&vddshv_sdio_pins_default>;
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ vin-supply = <&ldo1_reg>;
+ gpios = <&main_gpio0 31 GPIO_ACTIVE_HIGH>;
+ states = <1800000 0x0>,
+ <3300000 0x1>;
+ };
+};
+
+&main_pmx0 {
+ vddshv_sdio_pins_default: vddshv-sdio-pins-default {
+ pinctrl-single,pins = <
+ AM62X_IOPAD(0x07c, PIN_OUTPUT, 7) /* (M19) GPMC0_CLK.GPIO0_31 */
+ >;
+ };
+
+ main_gpio1_ioexp_intr_pins_default: main-gpio1-ioexp-intr-pins-default {
+ pinctrl-single,pins = <
+ AM62X_IOPAD(0x01d4, PIN_INPUT, 7) /* (C13) UART0_RTSn.GPIO1_23 */
+ >;
+ };
+
+ pmic_irq_pins_default: pmic-irq-pins-default {
+ pinctrl-single,pins = <
+ AM62X_IOPAD(0x01f4, PIN_INPUT, 0) /* (B16) EXTINTn */
+ >;
+ };
+};
+
+&main_i2c1 {
+ exp1: gpio@22 {
+ compatible = "ti,tca6424";
+ reg = <0x22>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ gpio-line-names = "GPIO_CPSW2_RST", "GPIO_CPSW1_RST",
+ "PRU_DETECT", "MMC1_SD_EN",
+ "VPP_LDO_EN", "EXP_PS_3V3_En",
+ "EXP_PS_5V0_En", "EXP_HAT_DETECT",
+ "GPIO_AUD_RSTn", "GPIO_eMMC_RSTn",
+ "UART1_FET_BUF_EN", "BT_UART_WAKE_SOC",
+ "GPIO_HDMI_RSTn", "CSI_GPIO0",
+ "CSI_GPIO1", "GPIO_OLDI_INT",
+ "HDMI_INTn", "TEST_GPIO2",
+ "MCASP1_FET_EN", "MCASP1_BUF_BT_EN",
+ "MCASP1_FET_SEL", "UART1_FET_SEL",
+ "", "IO_EXP_TEST_LED";
+
+ interrupt-parent = <&main_gpio1>;
+ interrupts = <23 IRQ_TYPE_EDGE_FALLING>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&main_gpio1_ioexp_intr_pins_default>;
+ };
+
+ exp2: gpio@23 {
+ compatible = "ti,tca6424";
+ reg = <0x23>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ gpio-line-names = "", "",
+ "", "",
+ "", "",
+ "", "",
+ "WL_LT_EN", "CSI_RSTz",
+ "", "",
+ "", "",
+ "", "",
+ "SPI0_FET_SEL", "SPI0_FET_OE",
+ "GPIO_OLDI_RSTn", "PRU_3V3_EN",
+ "", "",
+ "CSI_VLDO_SEL", "SOC_WLAN_SDIO_RST";
+ };
+};
+
+&sdhci1 {
+ vmmc-supply = <&vdd_mmc1>;
+ vqmmc-supply = <&vddshv_sdio>;
+};
+
+&cpsw_port2 {
+ status = "disabled";
+};
+
+&main_i2c0 {
+ tps65219: pmic@30 {
+ compatible = "ti,tps65219";
+ reg = <0x30>;
+ buck1-supply = <&vcc_3v3_sys>;
+ buck2-supply = <&vcc_3v3_sys>;
+ buck3-supply = <&vcc_3v3_sys>;
+ ldo1-supply = <&vcc_3v3_sys>;
+ ldo2-supply = <&buck2_reg>;
+ ldo3-supply = <&vcc_3v3_sys>;
+ ldo4-supply = <&vcc_3v3_sys>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&pmic_irq_pins_default>;
+
+ interrupt-parent = <&gic500>;
+ interrupts = <GIC_SPI 224 IRQ_TYPE_LEVEL_HIGH>;
+ ti,power-button;
+
+ regulators {
+ buck1_reg: buck1 {
+ regulator-name = "VDD_CORE";
+ regulator-min-microvolt = <750000>;
+ regulator-max-microvolt = <750000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ buck2_reg: buck2 {
+ regulator-name = "VCC1V8_SYS";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ buck3_reg: buck3 {
+ regulator-name = "VDD_LPDDR4";
+ regulator-min-microvolt = <1100000>;
+ regulator-max-microvolt = <1100000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ ldo1_reg: ldo1 {
+ regulator-name = "VDDSHV_SDIO";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ ldo2_reg: ldo2 {
+ regulator-name = "VDDAR_CORE";
+ regulator-min-microvolt = <850000>;
+ regulator-max-microvolt = <850000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ ldo3_reg: ldo3 {
+ regulator-name = "VDDA_1V8";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ ldo4_reg: ldo4 {
+ regulator-name = "VDD_1V2";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1200000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+ };
+ };
+};
--
2.40.0
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