[PATCH v5 2/3] arm64: dts: amlogic: Add A4 Reset Controller

[Neil Armstrong]

On 20/03/2025 10:42, Kelvin Zhang via B4 Relay wrote:
> From: Zelong Dong <zelong.dong at amlogic.com>
> 
> Add the device node and related header file for Amlogic
> A4 reset controller.
> 
> Signed-off-by: Zelong Dong <zelong.dong at amlogic.com>
> Link: https://lore.kernel.org/r/20240918074211.8067-3-zelong.dong@amlogic.com
> Signed-off-by: Kelvin Zhang <kelvin.zhang at amlogic.com>
> ---
>   arch/arm64/boot/dts/amlogic/amlogic-a4-reset.h | 93 ++++++++++++++++++++++++++
>   arch/arm64/boot/dts/amlogic/amlogic-a4.dtsi    |  8 +++
>   2 files changed, 101 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/amlogic/amlogic-a4-reset.h b/arch/arm64/boot/dts/amlogic/amlogic-a4-reset.h
> new file mode 100644
> index 0000000000000000000000000000000000000000..f6a4c90bab3cf7cfaa3c98c522bed5e455b73bd3
> --- /dev/null
> +++ b/arch/arm64/boot/dts/amlogic/amlogic-a4-reset.h
> @@ -0,0 +1,93 @@
> +/* SPDX-License-Identifier: (GPL-2.0-only OR MIT) */
> +/*
> + * Copyright (c) 2024 Amlogic, Inc. All rights reserved.
> + */
> +
> +#ifndef __DTS_AMLOGIC_A4_RESET_H
> +#define __DTS_AMLOGIC_A4_RESET_H
> +
> +/* RESET0 */
> +/*						0-3 */
> +#define RESET_USB				4
> +/*						5-6*/
> +#define RESET_U2PHY22				7
> +#define RESET_USBPHY20				8
> +#define RESET_U2PHY21				9
> +#define RESET_USB2DRD				10
> +#define RESET_U2H				11
> +#define RESET_LED_CTRL				12
> +/*						13-31 */
> +
> +/* RESET1 */
> +#define RESET_AUDIO				32
> +#define RESET_AUDIO_VAD				33
> +/*						34*/
> +#define RESET_DDR_APB				35
> +#define RESET_DDR				36
> +#define RESET_VOUT_VENC				37
> +#define RESET_VOUT				38
> +/*						39-47 */
> +#define RESET_ETHERNET				48
> +/*						49-63 */
> +
> +/* RESET2 */
> +#define RESET_DEVICE_MMC_ARB			64
> +#define RESET_IRCTRL				65
> +/*						66*/
> +#define RESET_TS_PLL				67
> +/*						68-72*/
> +#define RESET_SPICC_0				73
> +#define RESET_SPICC_1				74
> +/*						75-79*/
> +#define RESET_MSR_CLK				80
> +/*						81*/
> +#define RESET_SAR_ADC				82
> +/*						83-87*/
> +#define RESET_ACODEC				88
> +/*						89-90*/
> +#define RESET_WATCHDOG				91
> +/*						92-95*/
> +
> +/* RESET3 */
> +/*						96-127 */
> +
> +/* RESET4 */
> +/*						128-131 */
> +#define RESET_PWM_AB				132
> +#define RESET_PWM_CD				133
> +#define RESET_PWM_EF				134
> +#define RESET_PWM_GH				135
> +/*						136-137*/
> +#define RESET_UART_A				138
> +#define RESET_UART_B				139
> +/*						140*/
> +#define RESET_UART_D				141
> +#define RESET_UART_E				142
> +/*						143-144*/
> +#define RESET_I2C_M_A				145
> +#define RESET_I2C_M_B				146
> +#define RESET_I2C_M_C				147
> +#define RESET_I2C_M_D				148
> +/*						149-151*/
> +#define RESET_SDEMMC_A				152
> +/*						153*/
> +#define RESET_SDEMMC_C				154
> +/*						155-159*/
> +
> +/* RESET5 */
> +/*						160-175*/
> +#define RESET_BRG_AO_NIC_SYS			176
> +/*						177*/
> +#define RESET_BRG_AO_NIC_MAIN			178
> +#define RESET_BRG_AO_NIC_AUDIO			179
> +/*						180-183*/
> +#define RESET_BRG_AO_NIC_ALL			184
> +/*						185*/
> +#define RESET_BRG_NIC_SDIO			186
> +#define RESET_BRG_NIC_EMMC			187
> +#define RESET_BRG_NIC_DSU			188
> +#define RESET_BRG_NIC_CLK81			189
> +#define RESET_BRG_NIC_MAIN			190
> +#define RESET_BRG_NIC_ALL			191
> +
> +#endif
> diff --git a/arch/arm64/boot/dts/amlogic/amlogic-a4.dtsi b/arch/arm64/boot/dts/amlogic/amlogic-a4.dtsi
> index fa80fa365f13c4a93f5577f78bf2b3369cb91cb8..6537153b3026af1bf9d1df0a196619b716553cde 100644
> --- a/arch/arm64/boot/dts/amlogic/amlogic-a4.dtsi
> +++ b/arch/arm64/boot/dts/amlogic/amlogic-a4.dtsi
> @@ -4,6 +4,7 @@
>    */
>   
>   #include "amlogic-a4-common.dtsi"
> +#include "amlogic-a4-reset.h"
>   #include <dt-bindings/power/amlogic,a4-pwrc.h>
>   #include <dt-bindings/pinctrl/amlogic,pinctrl.h>
>   / {
> @@ -51,6 +52,13 @@ pwrc: power-controller {
>   };
>   
>   &apb {
> +	reset: reset-controller at 2000 {
> +		compatible = "amlogic,a4-reset",
> +			     "amlogic,meson-s4-reset";
> +		reg = <0x0 0x2000 0x0 0x98>;
> +		#reset-cells = <1>;
> +	};
> +
>   	gpio_intc: interrupt-controller at 4080 {
>   		compatible = "amlogic,a4-gpio-intc",
>   			     "amlogic,meson-gpio-intc";
> 

Reviewed-by: Neil Armstrong <neil.armstrong at linaro.org>