From d8a83f8d2e730d4e05e8fc8e1faccbee0f95ca12 Mon Sep 17 00:00:00 2001
From: Devi Priya <quic_devipriy@quicinc.com>
Date: Wed, 10 May 2023 16:13:59 +0530
Subject: [PATCH] arm64: dts: qcom: ipq9574: add support for RDP418 variant

Add the initial device tree support for the Reference Design Platform (RDP)
418 based on IPQ9574 family of SoCs. This patch adds support for Console
UART, SPI NOR, eMMC and SMPA1 regulator node.

Co-developed-by: Anusha Rao <quic_anusha@quicinc.com>
Signed-off-by: Anusha Rao <quic_anusha@quicinc.com>
Signed-off-by: Devi Priya <quic_devipriy@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230510104359.16678-3-quic_devipriy@quicinc.com
---
 arch/arm64/boot/dts/qcom/Makefile           |   1 +
 arch/arm64/boot/dts/qcom/ipq9574-rdp418.dts | 124 ++++++++++++++++++++
 2 files changed, 125 insertions(+)
 create mode 100644 arch/arm64/boot/dts/qcom/ipq9574-rdp418.dts

diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index cddb90978cc1b..75dce9455c9e8 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -10,6 +10,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= ipq6018-cp01-c1.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= ipq8074-hk01.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= ipq8074-hk10-c1.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= ipq8074-hk10-c2.dtb
+dtb-$(CONFIG_ARCH_QCOM)	+= ipq9574-rdp418.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= ipq9574-rdp433.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-acer-a1-724.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-alcatel-idol347.dtb
diff --git a/arch/arm64/boot/dts/qcom/ipq9574-rdp418.dts b/arch/arm64/boot/dts/qcom/ipq9574-rdp418.dts
new file mode 100644
index 0000000000000..2b093e02637ba
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/ipq9574-rdp418.dts
@@ -0,0 +1,124 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * IPQ9574 RDP418 board device tree source
+ *
+ * Copyright (c) 2020-2021 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+/dts-v1/;
+
+#include "ipq9574.dtsi"
+
+/ {
+	model = "Qualcomm Technologies, Inc. IPQ9574/AP-AL02-C2";
+	compatible = "qcom,ipq9574-ap-al02-c2", "qcom,ipq9574";
+
+	aliases {
+		serial0 = &blsp1_uart2;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+};
+
+&blsp1_spi0 {
+	pinctrl-0 = <&spi_0_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+
+	flash@0 {
+		compatible = "micron,n25q128a11", "jedec,spi-nor";
+		reg = <0>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		spi-max-frequency = <50000000>;
+	};
+};
+
+&blsp1_uart2 {
+	pinctrl-0 = <&uart2_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&rpm_requests {
+	regulators {
+		compatible = "qcom,rpm-mp5496-regulators";
+
+		ipq9574_s1: s1 {
+		/*
+		 * During kernel bootup, the SoC runs at 800MHz with 875mV set by the bootloaders.
+		 * During regulator registration, kernel not knowing the initial voltage,
+		 * considers it as zero and brings up the regulators with minimum supported voltage.
+		 * Update the regulator-min-microvolt with SVS voltage of 725mV so that
+		 * the regulators are brought up with 725mV which is sufficient for all the
+		 * corner parts to operate at 800MHz
+		 */
+			regulator-min-microvolt = <725000>;
+			regulator-max-microvolt = <1075000>;
+		};
+	};
+};
+
+&sdhc_1 {
+	pinctrl-0 = <&sdc_default_state>;
+	pinctrl-names = "default";
+	mmc-ddr-1_8v;
+	mmc-hs200-1_8v;
+	mmc-hs400-1_8v;
+	mmc-hs400-enhanced-strobe;
+	max-frequency = <384000000>;
+	bus-width = <8>;
+	status = "okay";
+};
+
+&sleep_clk {
+	clock-frequency = <32000>;
+};
+
+&tlmm {
+	sdc_default_state: sdc-default-state {
+		clk-pins {
+			pins = "gpio5";
+			function = "sdc_clk";
+			drive-strength = <8>;
+			bias-disable;
+		};
+
+		cmd-pins {
+			pins = "gpio4";
+			function = "sdc_cmd";
+			drive-strength = <8>;
+			bias-pull-up;
+		};
+
+		data-pins {
+			pins = "gpio0", "gpio1", "gpio2",
+			       "gpio3", "gpio6", "gpio7",
+			       "gpio8", "gpio9";
+			function = "sdc_data";
+			drive-strength = <8>;
+			bias-pull-up;
+		};
+
+		rclk-pins {
+			pins = "gpio10";
+			function = "sdc_rclk";
+			drive-strength = <8>;
+			bias-pull-down;
+		};
+	};
+
+	spi_0_pins: spi-0-state {
+		pins = "gpio11", "gpio12", "gpio13", "gpio14";
+		function = "blsp0_spi";
+		drive-strength = <8>;
+		bias-disable;
+	};
+};
+
+&xo_board_clk {
+	clock-frequency = <24000000>;
+};
-- 
2.30.2