[PATCH 3/3] arm64: dts: amlogic: t7: Add clock controller nodes
Jian Hu
jian.hu at amlogic.com
Fri Mar 6 00:10:35 PST 2026
Hi, Ronald
Thanks for you review.
On 3/6/2026 3:47 PM, Ronald Claveau wrote:
> [ EXTERNAL EMAIL ]
>
> On 3/5/26 8:43 AM, Jian Hu wrote:
>> Add the required clock controller nodes for Amlogic T7 SoC family:
>> - SCMI clock controller
>> - PLL clock controller
>> - Peripheral clock controller
>>
>> Signed-off-by: Jian Hu <jian.hu at amlogic.com>
>> ---
>> arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi | 125 ++++++++++++++++++++
>> 1 file changed, 125 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi b/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi
>> index 6510068bcff9..6ea1b583b13d 100644
>> --- a/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi
>> +++ b/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi
>> @@ -6,6 +6,9 @@
>> #include <dt-bindings/interrupt-controller/arm-gic.h>
>> #include <dt-bindings/power/amlogic,t7-pwrc.h>
>> #include "amlogic-t7-reset.h"
>> +#include <dt-bindings/clock/amlogic,t7-scmi.h>
>> +#include <dt-bindings/clock/amlogic,t7-pll-clkc.h>
>> +#include <dt-bindings/clock/amlogic,t7-peripherals-clkc.h>
>>
>> / {
>> interrupt-parent = <&gic>;
>> @@ -201,6 +204,33 @@ pwrc: power-controller {
>> };
>> };
>>
>> + sram at f7042000 {
>> + compatible = "mmio-sram";
>> + #address-cells = <1>;
>> + #size-cells = <1>;
>> + ranges = <0 0x0 0xf7042000 0x100>;
>> +
>> + scmi_shmem: sram at 0 {
>> + compatible = "arm,scmi-shmem";
>> + reg = <0x0 0x100>;
>> + };
>> + };
>> +
>> + firmware {
>> + scmi: scmi {
>> + compatible = "arm,scmi-smc";
>> + arm,smc-id = <0x820000c1>;
>> + shmem = <&scmi_shmem>;
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> +
>> + scmi_clk: protocol at 14 {
>> + reg = <0x14>;
>> + #clock-cells = <1>;
>> + };
>> + };
>> + };
>> +
>> soc {
>> compatible = "simple-bus";
>> #address-cells = <2>;
>> @@ -224,6 +254,42 @@ apb4: bus at fe000000 {
>> #size-cells = <2>;
>> ranges = <0x0 0x0 0x0 0xfe000000 0x0 0x480000>;
>>
>> + clkc_periphs:clock-controller at 0 {
>> + compatible = "amlogic,t7-peripherals-clkc";
>> + reg = <0x0 0x0 0x0 0x1c8>;
>> + #clock-cells = <1>;
>> + clocks = <&xtal>,
>> + <&scmi_clk CLKID_SYS_CLK>,
>> + <&scmi_clk CLKID_FIXED_PLL>,
>> + <&scmi_clk CLKID_FCLK_DIV2>,
>> + <&scmi_clk CLKID_FCLK_DIV2P5>,
>> + <&scmi_clk CLKID_FCLK_DIV3>,
>> + <&scmi_clk CLKID_FCLK_DIV4>,
>> + <&scmi_clk CLKID_FCLK_DIV5>,
>> + <&scmi_clk CLKID_FCLK_DIV7>,
>> + <&hifi CLKID_HIFI_PLL>,
>> + <&gp0 CLKID_GP0_PLL>,
>> + <&gp1 CLKID_GP1_PLL>,
>> + <&mpll CLKID_MPLL1>,
>> + <&mpll CLKID_MPLL2>,
>> + <&mpll CLKID_MPLL3>;
>> + clock-names = "xtal",
>> + "sys",
>> + "fix",
>> + "fdiv2",
>> + "fdiv2p5",
>> + "fdiv3",
>> + "fdiv4",
>> + "fdiv5",
>> + "fdiv7",
>> + "hifi",
>> + "gp0",
>> + "gp1",
>> + "mpll1",
>> + "mpll2",
>> + "mpll3";
>> + };
>> +
>> reset: reset-controller at 2000 {
>> compatible = "amlogic,t7-reset";
>> reg = <0x0 0x2000 0x0 0x98>;
>> @@ -234,6 +300,7 @@ watchdog at 2100 {
>> compatible = "amlogic,t7-wdt";
>> reg = <0x0 0x2100 0x0 0x10>;
>> clocks = <&xtal>;
>> +
>> };
> Did you forget to add something here for watchdog ?
> If not I think you can remove that blank line.
It's an accidental addition (no missing content for the watchdog), so
I'll remove it in v2.
Thanks for pointing it out!
>> periphs_pinctrl: pinctrl at 4000 {
>> @@ -269,6 +336,64 @@ uart_a: serial at 78000 {
>> status = "disabled";
>> };
>>
>> + gp0:clock-controller at 8080 {
>> + compatible = "amlogic,t7-gp0-pll";
>> + reg = <0x0 0x8080 0x0 0x20>;
>> + clocks = <&scmi_clk CLKID_TOP_PLL_OSC>;
>> + clock-names = "in0";
>> + #clock-cells = <1>;
>> + };
>> +
>> + gp1:clock-controller at 80c0 {
>> + compatible = "amlogic,t7-gp1-pll";
>> + reg = <0x0 0x80c0 0x0 0x14>;
>> + clocks = <&scmi_clk CLKID_TOP_PLL_OSC>;
>> + clock-names = "in0";
>> + #clock-cells = <1>;
>> + };
>> +
>> + hifi:clock-controller at 8100 {
>> + compatible = "amlogic,t7-hifi-pll";
>> + reg = <0x0 0x8100 0x0 0x20>;
>> + clocks = <&scmi_clk CLKID_TOP_PLL_OSC>;
>> + clock-names = "in0";
>> + #clock-cells = <1>;
>> + };
>> +
>> + pcie:clock-controller at 8140 {
>> + compatible = "amlogic,t7-pcie-pll";
>> + reg = <0x0 0x8140 0x0 0x1c>;
>> + clocks = <&scmi_clk CLKID_PCIE_OSC>;
>> + clock-names = "in0";
>> + #clock-cells = <1>;
>> + };
>> +
>> + mpll:clock-controller at 8180 {
>> + compatible = "amlogic,t7-mpll";
>> + reg = <0x0 0x8180 0x0 0x28>;
>> + clocks = <&scmi_clk CLKID_FIXED_PLL_DCO>;
>> + clock-names = "in0";
>> + #clock-cells = <1>;
>> + };
>> +
>> + hdmi:clock-controller at 81c0 {
>> + compatible = "amlogic,t7-hdmi-pll";
>> + reg = <0x0 0x81c0 0x0 0x20>;
>> + clocks = <&scmi_clk CLKID_HDMI_PLL_OSC>;
>> + clock-names = "in0";
>> + #clock-cells = <1>;
>> + };
>> +
>> + mclk:clock-controller at 8300 {
>> + compatible = "amlogic,t7-mclk-pll";
>> + reg = <0x0 0x8300 0x0 0x18>;
>> + clocks = <&scmi_clk CLKID_MCLK_PLL_OSC>,
>> + <&xtal>,
>> + <&scmi_clk CLKID_FCLK_50M>;
>> + clock-names = "in0", "in1", "in2";
>> + #clock-cells = <1>;
>> + };
>> +
>> sec_ao: ao-secure at 10220 {
>> compatible = "amlogic,t7-ao-secure",
>> "amlogic,meson-gx-ao-secure",
>
> --
> Best regards,
> Ronald
More information about the linux-arm-kernel
mailing list