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

Doug Anderson dianders at chromium.org
Wed Jul 6 13:20:32 PDT 2016


Hi,

On Mon, Jul 4, 2016 at 5:34 AM, Caesar Wang <wxt at rock-chips.com> wrote:
> From: Elaine Zhang <zhangqing at rock-chips.com>
>
> 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 at rock-chips.com>
> Signed-off-by: Caesar Wang <wxt at rock-chips.com>
> Cc: linux-arm-kernel at lists.infradead.org
> Cc: linux-rockchip at lists.infradead.org
> Cc: Heiko Stuebner <heiko at sntech.de>
>
> ---
>
> 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 at ffa90000 {
> +               compatible = "syscon";
> +               reg = <0x0 0xffa90000 0x0 0x20>;
> +       };
> +
> +       qos_iep: qos_iep at ffa98000 {
> +               compatible = "syscon";
> +               reg = <0x0 0xffa98000 0x0 0x20>;
> +       };
> +
> +       qos_isp0_m0: qos_isp0_m0 at ffaa0000 {
> +               compatible = "syscon";
> +               reg = <0x0 0xffaa0000 0x0 0x20>;
> +       };
> +
> +       qos_isp0_m1: qos_isp0_m1 at ffaa0080 {
> +               compatible = "syscon";
> +               reg = <0x0 0xffaa0080 0x0 0x20>;
> +       };
> +
> +       qos_isp1_m0: qos_isp1_m0 at ffaa8000 {
> +               compatible = "syscon";
> +               reg = <0x0 0xffaa8000 0x0 0x20>;
> +       };
> +
> +       qos_isp1_m1: qos_isp1_m1 at ffaa8080 {
> +               compatible = "syscon";
> +               reg = <0x0 0xffaa8080 0x0 0x20>;
> +       };
> +
> +       qos_rga_r: qos_rga_r at ffab0000 {
> +               compatible = "syscon";
> +               reg = <0x0 0xffab0000 0x0 0x20>;
> +       };
> +
> +       qos_rga_w: qos_rga_w at ffab0080 {
> +               compatible = "syscon";
> +               reg = <0x0 0xffab0080 0x0 0x20>;
> +       };
> +
> +       qos_video_m0: qos_video_m0 at ffab8000 {
> +               compatible = "syscon";
> +               reg = <0x0 0xffab8000 0x0 0x20>;
> +       };
> +
> +       qos_video_m1_r: qos_video_m1_r at ffac0000 {
> +               compatible = "syscon";
> +               reg = <0x0 0xffac0000 0x0 0x20>;
> +       };
> +
> +       qos_video_m1_w: qos_video_m1_w at ffac0080 {
> +               compatible = "syscon";
> +               reg = <0x0 0xffac0080 0x0 0x20>;
> +       };
> +
> +       qos_vop_big_r: qos_vop_big_r at ffac8000 {
> +               compatible = "syscon";
> +               reg = <0x0 0xffac8000 0x0 0x20>;
> +       };
> +
> +       qos_vop_big_w: qos_vop_big_w at ffac8080 {
> +               compatible = "syscon";
> +               reg = <0x0 0xffac8080 0x0 0x20>;
> +       };
> +
> +       qos_vop_little: qos_vop_little at ffad0000 {
> +               compatible = "syscon";
> +               reg = <0x0 0xffad0000 0x0 0x20>;
> +       };
> +
> +       qos_gpu: qos_gpu at ffae0000 {
> +               compatible = "syscon";
> +               reg = <0x0 0xffae0000 0x0 0x20>;
> +       };
> +
> +       pmu: power-management at 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 at RK3399_PD_IEP {
> +                               reg = <RK3399_PD_IEP>;
> +                               clocks = <&cru ACLK_IEP>,
> +                                        <&cru HCLK_IEP>;
> +                               pm_qos = <&qos_iep>;
> +                       };
> +                       pd_vcodec at RK3399_PD_VCODEC {
> +                               reg = <RK3399_PD_VCODEC>;
> +                               clocks = <&cru ACLK_VCODEC>,
> +                                        <&cru HCLK_VCODEC>;
> +                               pm_qos = <&qos_video_m0>;
> +                       };
> +                       pd_vdu at 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 at 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 at 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 at RK3399_PD_VIO {
> +                               reg = <RK3399_PD_VIO>;
> +                               #address-cells = <1>;
> +                               #size-cells = <0>;
> +
> +                               pd_hdcp at RK3399_PD_HDCP {
> +                                       reg = <RK3399_PD_HDCP>;
> +                                       clocks = <&cru ACLK_HDCP>,
> +                                                <&cru HCLK_HDCP>,
> +                                                <&cru PCLK_HDCP>;
> +                                       pm_qos = <&qos_hdcp>;
> +                               };
> +                               pd_isp0 at RK3399_PD_ISP0 {
> +                                       reg = <RK3399_PD_ISP0>;
> +                                       clocks = <&cru ACLK_ISP0>,
> +                                                <&cru HCLK_ISP0>;
> +                                       pm_qos = <&qos_isp0_m0>,
> +                                                <&qos_isp0_m1>;
> +                               };
> +                               pd_isp1 at RK3399_PD_ISP1 {
> +                                       reg = <RK3399_PD_ISP1>;
> +                                       clocks = <&cru ACLK_ISP1>,
> +                                                <&cru HCLK_ISP1>;
> +                                       pm_qos = <&qos_isp1_m0>,
> +                                                <&qos_isp1_m1>;
> +                               };
> +                               pd_vo at RK3399_PD_VO {
> +                                       reg = <RK3399_PD_VO>;
> +                                       #address-cells = <1>;
> +                                       #size-cells = <0>;
> +
> +                                       pd_vopb at 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 at 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 at chromium.org>
Tested-by: Douglas Anderson <dianders at chromium.org>



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