diff options
| author | Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> | 2023-01-13 16:46:39 +0300 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2023-01-27 12:38:53 +0300 |
| commit | c3b8f309de8c6cd7d02908996f0471adb301190f (patch) | |
| tree | 968d8b04754e9c549d4ef341a8685438be67b148 /arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi | |
| parent | c9d95cf0bc50a320b779018854c8dda38fcf9276 (diff) | |
| download | linux-c3b8f309de8c6cd7d02908996f0471adb301190f.tar.xz | |
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: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230113134639.338908-1-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Diffstat (limited to 'arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi')
| -rw-r--r-- | arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi b/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi index 045d70535519..dd8e0e159526 100644 --- a/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi +++ b/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi @@ -5,6 +5,7 @@ * Copyright (C) 2021 Renesas Electronics Corp. */ +#include <dt-bindings/gpio/gpio.h> #include "r8a779f0.dtsi" / { @@ -32,6 +33,12 @@ 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 @@ 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 @@ function = "hscif0"; }; + i2c0_pins: i2c0 { + groups = "i2c0"; + function = "i2c0"; + }; + i2c4_pins: i2c4 { groups = "i2c4"; function = "i2c4"; @@ -150,3 +177,14 @@ &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; +}; |