Note that the UART driver does not currently support runtime-pm, so this
effectively always keeps the UART0 device on. However, this does clockgate
all the other UARTs, as those are not currently instantiated.
Signed-off-by: Hector Martin <marcan@xxxxxxxxx>
---
arch/arm64/boot/dts/apple/t8103.dtsi | 116 +++++++++++++++++++++++++++
1 file changed, 116 insertions(+)
diff --git a/arch/arm64/boot/dts/apple/t8103.dtsi b/arch/arm64/boot/dts/apple/t8103.dtsi
index 9f60f9e48ea0..63056ddc7ef7 100644
--- a/arch/arm64/boot/dts/apple/t8103.dtsi
+++ b/arch/arm64/boot/dts/apple/t8103.dtsi
@@ -122,6 +122,7 @@ serial0: serial@235200000 {
*/
clocks = <&clkref>, <&clkref>;
clock-names = "uart", "clk_uart_baud0";
+ power-domains = <&ps_uart0>;
status = "disabled";
};
@@ -131,5 +132,120 @@ aic: interrupt-controller@23b100000 {
interrupt-controller;
reg = <0x2 0x3b100000 0x0 0x8000>;
};
+
+ pmgr: power-management@23b700000 {
+ compatible = "apple,t8103-pmgr", "apple,pmgr", "syscon", "simple-mfd";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ reg = <0x2 0x3b700000 0x0 0x14000>;
+
+ ps_sio_busif: power-controller@1c0 {
+ compatible = "apple,t8103-pmgr-pwrstate", "apple,pmgr-pwrstate";
+ reg = <0x1c0>;
+ #power-domain-cells = <0>;
+ #reset-cells = <0>;
+ apple,domain-name = "sio_busif";
+ };
+
+ ps_sio: power-controller@1c8 {
+ compatible = "apple,t8103-pmgr-pwrstate", "apple,pmgr-pwrstate";
+ reg = <0x1c8>;
+ #power-domain-cells = <0>;
+ #reset-cells = <0>;
+ apple,domain-name = "sio";
+ power-domains = <&ps_sio_busif>;
+ };
+
+ ps_uart_p: power-controller@220 {
+ compatible = "apple,t8103-pmgr-pwrstate", "apple,pmgr-pwrstate";
+ reg = <0x220>;
+ #power-domain-cells = <0>;
+ #reset-cells = <0>;
+ apple,domain-name = "uart_p";
+ power-domains = <&ps_sio>;
+ };
+
+ ps_uart0: power-controller@270 {
+ compatible = "apple,t8103-pmgr-pwrstate", "apple,pmgr-pwrstate";
+ reg = <0x270>;
+ #power-domain-cells = <0>;
+ #reset-cells = <0>;
+ apple,domain-name = "uart0";
+ power-domains = <&ps_uart_p>;
+ };
+
+ ps_uart1: power-controller@278 {
+ compatible = "apple,t8103-pmgr-pwrstate", "apple,pmgr-pwrstate";
+ reg = <0x278>;
+ #power-domain-cells = <0>;
+ #reset-cells = <0>;
+ apple,domain-name = "uart1";
+ power-domains = <&ps_uart_p>;
+ };
+
+ ps_uart2: power-controller@280 {
+ compatible = "apple,t8103-pmgr-pwrstate", "apple,pmgr-pwrstate";
+ reg = <0x280>;
+ #power-domain-cells = <0>;
+ #reset-cells = <0>;
+ apple,domain-name = "uart2";
+ power-domains = <&ps_uart_p>;
+ };
+
+ ps_uart3: power-controller@288 {
+ compatible = "apple,t8103-pmgr-pwrstate", "apple,pmgr-pwrstate";
+ reg = <0x288>;
+ #power-domain-cells = <0>;
+ #reset-cells = <0>;
+ apple,domain-name = "uart3";
+ power-domains = <&ps_uart_p>;
+ };
+
+ ps_uart4: power-controller@290 {
+ compatible = "apple,t8103-pmgr-pwrstate", "apple,pmgr-pwrstate";
+ reg = <0x290>;
+ #power-domain-cells = <0>;
+ #reset-cells = <0>;
+ apple,domain-name = "uart4";
+ power-domains = <&ps_uart_p>;
+ };
+
+ ps_uart5: power-controller@298 {
+ compatible = "apple,t8103-pmgr-pwrstate", "apple,pmgr-pwrstate";
+ reg = <0x298>;
+ #power-domain-cells = <0>;
+ #reset-cells = <0>;
+ apple,domain-name = "uart5";
+ power-domains = <&ps_uart_p>;
+ };
+
+ ps_uart6: power-controller@2a0 {
+ compatible = "apple,t8103-pmgr-pwrstate", "apple,pmgr-pwrstate";
+ reg = <0x2a0>;
+ #power-domain-cells = <0>;
+ #reset-cells = <0>;
+ apple,domain-name = "uart6";
+ power-domains = <&ps_uart_p>;
+ };
+
+ ps_uart7: power-controller@2a8 {
+ compatible = "apple,t8103-pmgr-pwrstate", "apple,pmgr-pwrstate";
+ reg = <0x2a8>;
+ #power-domain-cells = <0>;
+ #reset-cells = <0>;
+ apple,domain-name = "uart7";
+ power-domains = <&ps_uart_p>;
+ };
+
+ ps_uart8: power-controller@2b0 {
+ compatible = "apple,t8103-pmgr-pwrstate", "apple,pmgr-pwrstate";
+ reg = <0x2b0>;
+ #power-domain-cells = <0>;
+ #reset-cells = <0>;
+ apple,domain-name = "uart8";
+ power-domains = <&ps_uart_p>;
+ };
+ };
};
};
--
2.33.0
