Commit c3b8f309 authored by Yoshihiro Shimoda's avatar Yoshihiro Shimoda Committed by Geert Uytterhoeven
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arm64: dts: renesas: spider-cpu: Enable UFS device 



Enable UFS device for R-Car S4-8 Spider CPU board.

Note that the conditions of RC21012 on the Spider are:
 - OUT11 (for UFS30_REFCLK_V) is disabled as default.
 - OUT11 is controlled by GPIO0 pin.
 - The GPIO0 pin is inverted sense (low active) and pull-up enabled.

To output the clock, pin 4 of TCA9554 on the Spider board needs to
output low level so that using "gpio-gate-clock" for it.

Signed-off-by: default avatarYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230113134639.338908-1-yoshihiro.shimoda.uh@renesas.com


Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
parent c9d95cf0

arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi

+38 −0
Original line number Diff line number Diff line
@@ -5,6 +5,7 @@ 
 * Copyright (C) 2021 Renesas Electronics Corp.

 */



#include <dt-bindings/gpio/gpio.h>

#include "r8a779f0.dtsi"



/ {
@@ -32,6 +33,12 @@ memory@480000000 { 
		reg = <0x4 0x80000000 0x0 0x80000000>;

	};



	rc21012_ufs: clk-rc21012-ufs {

		compatible = "fixed-clock";

		clock-frequency = <38400000>;

		#clock-cells = <0>;

	};



	reg_1p8v: regulator-1p8v {

		compatible = "regulator-fixed";

		regulator-name = "fixed-1.8V";
@@ -67,6 +74,21 @@ &hscif0 { 
	status = "okay";

};



&i2c0 {

	pinctrl-0 = <&i2c0_pins>;

	pinctrl-names = "default";



	status = "okay";

	clock-frequency = <400000>;



	gpio_exp_20: gpio@20 {

		compatible = "ti,tca9554";

		reg = <0x20>;

		gpio-controller;

		#gpio-cells = <2>;

	};

};



&i2c4 {

	pinctrl-0 = <&i2c4_pins>;

	pinctrl-names = "default";
@@ -112,6 +134,11 @@ hscif0_pins: hscif0 { 
		function = "hscif0";

	};



	i2c0_pins: i2c0 {

		groups = "i2c0";

		function = "i2c0";

	};



	i2c4_pins: i2c4 {

		groups = "i2c4";

		function = "i2c4";
@@ -150,3 +177,14 @@ &scif0 { 
&scif_clk {

	clock-frequency = <24000000>;

};



&ufs {

	status = "okay";

};



&ufs30_clk {

	compatible = "gpio-gate-clock";

	clocks = <&rc21012_ufs>;

	enable-gpios = <&gpio_exp_20 4 GPIO_ACTIVE_LOW>;

	/delete-property/ clock-frequency;

};