Re: [PATCH v3] arm64: dts: rockchip: add the power domain node for rk3399

From: Doug Anderson
Date: Wed Jul 06 2016 - 16:20:42 EST

Hi,

On Mon, Jul 4, 2016 at 5:34 AM, Caesar Wang <wxt@xxxxxxxxxxxxxx> wrote:
> From: Elaine Zhang <zhangqing@xxxxxxxxxxxxxx>
>
> In order to meet low power requirements, a power management unit (PMU) is
> designed for controlling power resources in RK3399. The RK3399 PMU is
> dedicated for managing the power of the whole chip.
>
> 1. add pd node for RK3399 Soc
> 2. create power domain tree
> 3. add qos node for domain
>
> From the DT/binds and driver can get more detail information:
> The driver:
> drivers/soc/rockchip/pm_domains.c
> The document:
> Documentation/devicetree/bindings/soc/rockchip/power_domain.txt
>
> Note:
> As the TRM lists many voltage domains and power domains, then this patch
> adds some domains for driver. Due to some domains
> (e.g. emmc, usb, core)...We can't turned off it on
> bootup, or says some device driver can't handle the power domain enough.
> Maybe We will add more other domains in the future or later.
>
> Signed-off-by: Elaine Zhang <zhangqing@xxxxxxxxxxxxxx>
> Signed-off-by: Caesar Wang <wxt@xxxxxxxxxxxxxx>
> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> Cc: linux-rockchip@xxxxxxxxxxxxxxxxxxx
> Cc: Heiko Stuebner <heiko@xxxxxxxxx>
>
> ---
>
> Changes in v3:
> - As some commnets on https://patchwork.kernel.org/patch/9209205/
> - according to the alphabetically sort
> - %s/RK3399_PD_VOP/RK3399_PD_VOPL, %s/RK3399_PD_IE/RK3399_PD_IEP
>
> Changes in v2:
> - As Doug/Heiko commnets on https://patchwork.kernel.org/patch/9206415/.
> drop the debugfs-dump and Add the comments for alphabetical order.
>
> arch/arm64/boot/dts/rockchip/rk3399.dtsi | 179 +++++++++++++++++++++++++++++++
> 1 file changed, 179 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
> index a6dd623..4559c04 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
> +++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
> @@ -45,6 +45,7 @@
> #include <dt-bindings/interrupt-controller/arm-gic.h>
> #include <dt-bindings/interrupt-controller/irq.h>
> #include <dt-bindings/pinctrl/rockchip.h>
> +#include <dt-bindings/power/rk3399-power.h>
> #include <dt-bindings/thermal/thermal.h>
>
> / {
> @@ -594,6 +595,184 @@
> status = "disabled";
> };
>
> + qos_hdcp: qos_hdcp@ffa90000 {
> + compatible = "syscon";
> + reg = <0x0 0xffa90000 0x0 0x20>;
> + };
> +
> + qos_iep: qos_iep@ffa98000 {
> + compatible = "syscon";
> + reg = <0x0 0xffa98000 0x0 0x20>;
> + };
> +
> + qos_isp0_m0: qos_isp0_m0@ffaa0000 {
> + compatible = "syscon";
> + reg = <0x0 0xffaa0000 0x0 0x20>;
> + };
> +
> + qos_isp0_m1: qos_isp0_m1@ffaa0080 {
> + compatible = "syscon";
> + reg = <0x0 0xffaa0080 0x0 0x20>;
> + };
> +
> + qos_isp1_m0: qos_isp1_m0@ffaa8000 {
> + compatible = "syscon";
> + reg = <0x0 0xffaa8000 0x0 0x20>;
> + };
> +
> + qos_isp1_m1: qos_isp1_m1@ffaa8080 {
> + compatible = "syscon";
> + reg = <0x0 0xffaa8080 0x0 0x20>;
> + };
> +
> + qos_rga_r: qos_rga_r@ffab0000 {
> + compatible = "syscon";
> + reg = <0x0 0xffab0000 0x0 0x20>;
> + };
> +
> + qos_rga_w: qos_rga_w@ffab0080 {
> + compatible = "syscon";
> + reg = <0x0 0xffab0080 0x0 0x20>;
> + };
> +
> + qos_video_m0: qos_video_m0@ffab8000 {
> + compatible = "syscon";
> + reg = <0x0 0xffab8000 0x0 0x20>;
> + };
> +
> + qos_video_m1_r: qos_video_m1_r@ffac0000 {
> + compatible = "syscon";
> + reg = <0x0 0xffac0000 0x0 0x20>;
> + };
> +
> + qos_video_m1_w: qos_video_m1_w@ffac0080 {
> + compatible = "syscon";
> + reg = <0x0 0xffac0080 0x0 0x20>;
> + };
> +
> + qos_vop_big_r: qos_vop_big_r@ffac8000 {
> + compatible = "syscon";
> + reg = <0x0 0xffac8000 0x0 0x20>;
> + };
> +
> + qos_vop_big_w: qos_vop_big_w@ffac8080 {
> + compatible = "syscon";
> + reg = <0x0 0xffac8080 0x0 0x20>;
> + };
> +
> + qos_vop_little: qos_vop_little@ffad0000 {
> + compatible = "syscon";
> + reg = <0x0 0xffad0000 0x0 0x20>;
> + };
> +
> + qos_gpu: qos_gpu@ffae0000 {
> + compatible = "syscon";
> + reg = <0x0 0xffae0000 0x0 0x20>;
> + };
> +
> + pmu: power-management@ff310000 {
> + compatible = "rockchip,rk3399-pmu", "syscon", "simple-mfd";
> + reg = <0x0 0xff310000 0x0 0x1000>;
> +
> + /*
> + * Note: RK3399 supports 6 voltage domains including VD_CORE_L,
> + * VD_CORE_B, VD_CENTER, VD_GPU, VD_LOGIC and VD_PMU.
> + * Some of the power domains are grouped together for every
> + * voltage domain.
> + * The detail contents as below.
> + */
> + power: power-controller {
> + status = "okay";

In an offline conversation, Heiko pointed out to me that this 'status
= "okay";' is not needed...

> + compatible = "rockchip,rk3399-power-controller";
> + #power-domain-cells = <1>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + /* These power domains are grouped by VD_CENTER */
> + pd_iep@RK3399_PD_IEP {
> + reg = <RK3399_PD_IEP>;
> + clocks = <&cru ACLK_IEP>,
> + <&cru HCLK_IEP>;
> + pm_qos = <&qos_iep>;
> + };
> + pd_vcodec@RK3399_PD_VCODEC {
> + reg = <RK3399_PD_VCODEC>;
> + clocks = <&cru ACLK_VCODEC>,
> + <&cru HCLK_VCODEC>;
> + pm_qos = <&qos_video_m0>;
> + };
> + pd_vdu@RK3399_PD_VDU {
> + reg = <RK3399_PD_VDU>;
> + clocks = <&cru ACLK_VDU>,
> + <&cru HCLK_VDU>;
> + pm_qos = <&qos_video_m1_r>,
> + <&qos_video_m1_w>;
> + };
> + pd_rga@RK3399_PD_RGA {
> + reg = <RK3399_PD_RGA>;
> + clocks = <&cru ACLK_RGA>,
> + <&cru HCLK_RGA>;
> + pm_qos = <&qos_rga_r>,
> + <&qos_rga_w>;
> + };

rga is still sorted incorrectly.

> +
> + /* These power domains are grouped by VD_GPU */
> + pd_gpu@RK3399_PD_GPU {
> + reg = <RK3399_PD_GPU>;
> + clocks = <&cru ACLK_GPU>;
> + pm_qos = <&qos_gpu>;
> + };
> +
> + /* These power domains are grouped by VD_LOGIC */
> + pd_vio@RK3399_PD_VIO {
> + reg = <RK3399_PD_VIO>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + pd_hdcp@RK3399_PD_HDCP {
> + reg = <RK3399_PD_HDCP>;
> + clocks = <&cru ACLK_HDCP>,
> + <&cru HCLK_HDCP>,
> + <&cru PCLK_HDCP>;
> + pm_qos = <&qos_hdcp>;
> + };
> + pd_isp0@RK3399_PD_ISP0 {
> + reg = <RK3399_PD_ISP0>;
> + clocks = <&cru ACLK_ISP0>,
> + <&cru HCLK_ISP0>;
> + pm_qos = <&qos_isp0_m0>,
> + <&qos_isp0_m1>;
> + };
> + pd_isp1@RK3399_PD_ISP1 {
> + reg = <RK3399_PD_ISP1>;
> + clocks = <&cru ACLK_ISP1>,
> + <&cru HCLK_ISP1>;
> + pm_qos = <&qos_isp1_m0>,
> + <&qos_isp1_m1>;
> + };
> + pd_vo@RK3399_PD_VO {
> + reg = <RK3399_PD_VO>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + pd_vopb@RK3399_PD_VOPB {
> + reg = <RK3399_PD_VOPB>;
> + clocks = <&cru ACLK_VOP0>,
> + <&cru HCLK_VOP0>;
> + pm_qos = <&qos_vop_big_r>,
> + <&qos_vop_big_w>;
> + };
> + pd_vopl@RK3399_PD_VOPL {
> + reg = <RK3399_PD_VOPL>;
> + clocks = <&cru ACLK_VOP1>,
> + <&cru HCLK_VOP1>;
> + pm_qos = <&qos_vop_little>;
> + };
> + };
> + };
> + };
> + };
> +

I think Heiko said he'll handle the nits when applying. ...so given that:

Reviewed-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
Tested-by: Douglas Anderson <dianders@xxxxxxxxxxxx>