arm64: dts: qcom: ipq9574: add support for RDP453 variant

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

Signed-off-by: Devi Priya <quic_devipriy@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230526153152.777-3-quic_devipriy@quicinc.com

diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index 78dedf9f69fe6fdcaf740fc4bce9879c9b501f36..4a2e09ec381da465866068b6a41a0c0395f79905 100644 (file)
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -13,6 +13,7 @@ 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)        += ipq9574-rdp449.dtb
+dtb-$(CONFIG_ARCH_QCOM)        += ipq9574-rdp453.dtb
 dtb-$(CONFIG_ARCH_QCOM)        += msm8916-acer-a1-724.dtb
 dtb-$(CONFIG_ARCH_QCOM)        += msm8916-alcatel-idol347.dtb
 dtb-$(CONFIG_ARCH_QCOM)        += msm8916-asus-z00l.dtb

diff --git a/arch/arm64/boot/dts/qcom/ipq9574-rdp453.dts b/arch/arm64/boot/dts/qcom/ipq9574-rdp453.dts
new file mode 100644 (file)
index 0000000..f01de66
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/ipq9574-rdp453.dts
@@ -0,0 +1,80 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * IPQ9574 RDP453 board device tree source
+ *
+ * Copyright (c) 2020-2021 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+/dts-v1/;
+
+#include "ipq9574.dtsi"
+
+/ {
+       model = "Qualcomm Technologies, Inc. IPQ9574/AP-AL02-C8";
+       compatible = "qcom,ipq9574-ap-al02-c8", "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>;
+               };
+       };
+};
+
+&sleep_clk {
+       clock-frequency = <32000>;
+};
+
+&tlmm {
+       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>;
+};