diff mbox series

[v10,5/5] riscv: dts: add clock generator for Sophgo SG2042 SoC

Message ID dc899c89e5c30e2267965f185b52d6dded4eb1ac.1708223519.git.unicorn_wang@outlook.com (mailing list archive)
State Not Applicable, archived
Headers show
Series riscv: sophgo: add clock support for sg2042 | expand

Commit Message

Chen Wang Feb. 18, 2024, 2:52 a.m. UTC 
From: Chen Wang <unicorn_wang@outlook.com>

Add clock generator node to device tree for SG2042, and enable clock for
uart.

Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
---
 .../boot/dts/sophgo/sg2042-milkv-pioneer.dts  | 12 +++++
 arch/riscv/boot/dts/sophgo/sg2042.dtsi        | 48 +++++++++++++++++++
 2 files changed, 60 insertions(+)

Comments

Guo Ren Feb. 20, 2024, 1:18 a.m. UTC | #1 
On Sun, Feb 18, 2024 at 10:52 AM Chen Wang <unicornxw@gmail.com> wrote:
>
> From: Chen Wang <unicorn_wang@outlook.com>
>
> Add clock generator node to device tree for SG2042, and enable clock for
> uart.
>
> Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
> ---
>  .../boot/dts/sophgo/sg2042-milkv-pioneer.dts  | 12 +++++
>  arch/riscv/boot/dts/sophgo/sg2042.dtsi        | 48 +++++++++++++++++++
>  2 files changed, 60 insertions(+)
>
> diff --git a/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts b/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
> index 49b4b9c2c101..80cb017974d8 100644
> --- a/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
> +++ b/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
> @@ -14,6 +14,18 @@ chosen {
>         };
>  };
>
> +&cgi_main {
> +       clock-frequency = <25000000>;
> +};
> +
> +&cgi_dpll0 {
> +       clock-frequency = <25000000>;
> +};
> +
> +&cgi_dpll1 {
> +       clock-frequency = <25000000>;
> +};
> +
If all are fixed, why do we separate them into three pieces? To show
real internal hardware?

>  &uart0 {
>         status = "okay";
>  };
> diff --git a/arch/riscv/boot/dts/sophgo/sg2042.dtsi b/arch/riscv/boot/dts/sophgo/sg2042.dtsi
> index ead1cc35d88b..e70c43e2ccbe 100644
> --- a/arch/riscv/boot/dts/sophgo/sg2042.dtsi
> +++ b/arch/riscv/boot/dts/sophgo/sg2042.dtsi
> @@ -5,6 +5,9 @@
>
>  /dts-v1/;
>  #include <dt-bindings/interrupt-controller/irq.h>
> +#include <dt-bindings/clock/sophgo,sg2042-pll.h>
> +#include <dt-bindings/clock/sophgo,sg2042-rpgate.h>
> +#include <dt-bindings/clock/sophgo,sg2042-clkgen.h>
>
>  #include "sg2042-cpus.dtsi"
>
> @@ -18,12 +21,54 @@ aliases {
>                 serial0 = &uart0;
>         };
>
> +       cgi_main: oscillator0 {
> +               compatible = "fixed-clock";
> +               clock-output-names = "cgi_main";
> +               #clock-cells = <0>;
> +       };
> +
> +       cgi_dpll0: oscillator1 {
> +               compatible = "fixed-clock";
> +               clock-output-names = "cgi_dpll0";
> +               #clock-cells = <0>;
> +       };
> +
> +       cgi_dpll1: oscillator2 {
> +               compatible = "fixed-clock";
> +               clock-output-names = "cgi_dpll1";
> +               #clock-cells = <0>;
> +       };
> +
>         soc: soc {
>                 compatible = "simple-bus";
>                 #address-cells = <2>;
>                 #size-cells = <2>;
>                 ranges;
>
> +               pllclk: clock-controller@70300100c0 {
> +                       compatible = "sophgo,sg2042-pll";
> +                       reg = <0x70 0x300100c0 0x0 0x40>;
> +                       clocks = <&cgi_main>, <&cgi_dpll0>, <&cgi_dpll1>;
> +                       #clock-cells = <1>;
> +               };
> +
> +               rpgate: clock-controller@7030010368 {
> +                       compatible = "sophgo,sg2042-rpgate";
> +                       reg = <0x70 0x30010368 0x0 0x98>;
> +                       clocks = <&clkgen GATE_CLK_RP_CPU_NORMAL>;
> +                       #clock-cells = <1>;
> +               };
> +
> +               clkgen: clock-controller@7030012000 {
> +                       compatible = "sophgo,sg2042-clkgen";
> +                       reg = <0x70 0x30012000 0x0 0x1000>;
> +                       clocks = <&pllclk MPLL_CLK>,
> +                                <&pllclk FPLL_CLK>,
> +                                <&pllclk DPLL0_CLK>,
> +                                <&pllclk DPLL1_CLK>;
> +                       #clock-cells = <1>;
> +               };
> +
>                 clint_mswi: interrupt-controller@7094000000 {
>                         compatible = "sophgo,sg2042-aclint-mswi", "thead,c900-aclint-mswi";
>                         reg = <0x00000070 0x94000000 0x00000000 0x00004000>;
> @@ -333,6 +378,9 @@ uart0: serial@7040000000 {
>                         interrupt-parent = <&intc>;
>                         interrupts = <112 IRQ_TYPE_LEVEL_HIGH>;
>                         clock-frequency = <500000000>;
> +                       clocks = <&clkgen GATE_CLK_UART_500M>,
> +                                <&clkgen GATE_CLK_APB_UART>;
> +                       clock-names = "baudclk", "apb_pclk";
>                         reg-shift = <2>;
>                         reg-io-width = <4>;
>                         status = "disabled";
> --
> 2.25.1
>
Others LGTM.

Reviewed-by: Guo Ren <guoren@kernel.org>
Chen Wang Feb. 20, 2024, 1:22 a.m. UTC | #2 
On 2024/2/20 9:18, Guo Ren wrote:
> On Sun, Feb 18, 2024 at 10:52 AM Chen Wang <unicornxw@gmail.com> wrote:
>> From: Chen Wang <unicorn_wang@outlook.com>
>>
>> Add clock generator node to device tree for SG2042, and enable clock for
>> uart.
>>
>> Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
>> ---
>>   .../boot/dts/sophgo/sg2042-milkv-pioneer.dts  | 12 +++++
>>   arch/riscv/boot/dts/sophgo/sg2042.dtsi        | 48 +++++++++++++++++++
>>   2 files changed, 60 insertions(+)
>>
>> diff --git a/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts b/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
>> index 49b4b9c2c101..80cb017974d8 100644
>> --- a/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
>> +++ b/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
>> @@ -14,6 +14,18 @@ chosen {
>>          };
>>   };
>>
>> +&cgi_main {
>> +       clock-frequency = <25000000>;
>> +};
>> +
>> +&cgi_dpll0 {
>> +       clock-frequency = <25000000>;
>> +};
>> +
>> +&cgi_dpll1 {
>> +       clock-frequency = <25000000>;
>> +};
>> +
> If all are fixed, why do we separate them into three pieces? To show
> real internal hardware?
Yes, according to TRM, there are three input cgi(Clock Generator IC) on 
board.
>
>>   &uart0 {
>>          status = "okay";
>>   };
>> diff --git a/arch/riscv/boot/dts/sophgo/sg2042.dtsi b/arch/riscv/boot/dts/sophgo/sg2042.dtsi
>> index ead1cc35d88b..e70c43e2ccbe 100644
>> --- a/arch/riscv/boot/dts/sophgo/sg2042.dtsi
>> +++ b/arch/riscv/boot/dts/sophgo/sg2042.dtsi
>> @@ -5,6 +5,9 @@
>>
>>   /dts-v1/;
>>   #include <dt-bindings/interrupt-controller/irq.h>
>> +#include <dt-bindings/clock/sophgo,sg2042-pll.h>
>> +#include <dt-bindings/clock/sophgo,sg2042-rpgate.h>
>> +#include <dt-bindings/clock/sophgo,sg2042-clkgen.h>
>>
>>   #include "sg2042-cpus.dtsi"
>>
>> @@ -18,12 +21,54 @@ aliases {
>>                  serial0 = &uart0;
>>          };
>>
>> +       cgi_main: oscillator0 {
>> +               compatible = "fixed-clock";
>> +               clock-output-names = "cgi_main";
>> +               #clock-cells = <0>;
>> +       };
>> +
>> +       cgi_dpll0: oscillator1 {
>> +               compatible = "fixed-clock";
>> +               clock-output-names = "cgi_dpll0";
>> +               #clock-cells = <0>;
>> +       };
>> +
>> +       cgi_dpll1: oscillator2 {
>> +               compatible = "fixed-clock";
>> +               clock-output-names = "cgi_dpll1";
>> +               #clock-cells = <0>;
>> +       };
>> +
>>          soc: soc {
>>                  compatible = "simple-bus";
>>                  #address-cells = <2>;
>>                  #size-cells = <2>;
>>                  ranges;
>>
>> +               pllclk: clock-controller@70300100c0 {
>> +                       compatible = "sophgo,sg2042-pll";
>> +                       reg = <0x70 0x300100c0 0x0 0x40>;
>> +                       clocks = <&cgi_main>, <&cgi_dpll0>, <&cgi_dpll1>;
>> +                       #clock-cells = <1>;
>> +               };
>> +
>> +               rpgate: clock-controller@7030010368 {
>> +                       compatible = "sophgo,sg2042-rpgate";
>> +                       reg = <0x70 0x30010368 0x0 0x98>;
>> +                       clocks = <&clkgen GATE_CLK_RP_CPU_NORMAL>;
>> +                       #clock-cells = <1>;
>> +               };
>> +
>> +               clkgen: clock-controller@7030012000 {
>> +                       compatible = "sophgo,sg2042-clkgen";
>> +                       reg = <0x70 0x30012000 0x0 0x1000>;
>> +                       clocks = <&pllclk MPLL_CLK>,
>> +                                <&pllclk FPLL_CLK>,
>> +                                <&pllclk DPLL0_CLK>,
>> +                                <&pllclk DPLL1_CLK>;
>> +                       #clock-cells = <1>;
>> +               };
>> +
>>                  clint_mswi: interrupt-controller@7094000000 {
>>                          compatible = "sophgo,sg2042-aclint-mswi", "thead,c900-aclint-mswi";
>>                          reg = <0x00000070 0x94000000 0x00000000 0x00004000>;
>> @@ -333,6 +378,9 @@ uart0: serial@7040000000 {
>>                          interrupt-parent = <&intc>;
>>                          interrupts = <112 IRQ_TYPE_LEVEL_HIGH>;
>>                          clock-frequency = <500000000>;
>> +                       clocks = <&clkgen GATE_CLK_UART_500M>,
>> +                                <&clkgen GATE_CLK_APB_UART>;
>> +                       clock-names = "baudclk", "apb_pclk";
>>                          reg-shift = <2>;
>>                          reg-io-width = <4>;
>>                          status = "disabled";
>> --
>> 2.25.1
>>
> Others LGTM.
>
> Reviewed-by: Guo Ren <guoren@kernel.org>
>
diff mbox series

Patch

diff --git a/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts b/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
index 49b4b9c2c101..80cb017974d8 100644
--- a/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
+++ b/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
@@ -14,6 +14,18 @@  chosen {
 	};
 };
 
+&cgi_main {
+	clock-frequency = <25000000>;
+};
+
+&cgi_dpll0 {
+	clock-frequency = <25000000>;
+};
+
+&cgi_dpll1 {
+	clock-frequency = <25000000>;
+};
+
 &uart0 {
 	status = "okay";
 };
diff --git a/arch/riscv/boot/dts/sophgo/sg2042.dtsi b/arch/riscv/boot/dts/sophgo/sg2042.dtsi
index ead1cc35d88b..e70c43e2ccbe 100644
--- a/arch/riscv/boot/dts/sophgo/sg2042.dtsi
+++ b/arch/riscv/boot/dts/sophgo/sg2042.dtsi
@@ -5,6 +5,9 @@ 
 
 /dts-v1/;
 #include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/clock/sophgo,sg2042-pll.h>
+#include <dt-bindings/clock/sophgo,sg2042-rpgate.h>
+#include <dt-bindings/clock/sophgo,sg2042-clkgen.h>
 
 #include "sg2042-cpus.dtsi"
 
@@ -18,12 +21,54 @@  aliases {
 		serial0 = &uart0;
 	};
 
+	cgi_main: oscillator0 {
+		compatible = "fixed-clock";
+		clock-output-names = "cgi_main";
+		#clock-cells = <0>;
+	};
+
+	cgi_dpll0: oscillator1 {
+		compatible = "fixed-clock";
+		clock-output-names = "cgi_dpll0";
+		#clock-cells = <0>;
+	};
+
+	cgi_dpll1: oscillator2 {
+		compatible = "fixed-clock";
+		clock-output-names = "cgi_dpll1";
+		#clock-cells = <0>;
+	};
+
 	soc: soc {
 		compatible = "simple-bus";
 		#address-cells = <2>;
 		#size-cells = <2>;
 		ranges;
 
+		pllclk: clock-controller@70300100c0 {
+			compatible = "sophgo,sg2042-pll";
+			reg = <0x70 0x300100c0 0x0 0x40>;
+			clocks = <&cgi_main>, <&cgi_dpll0>, <&cgi_dpll1>;
+			#clock-cells = <1>;
+		};
+
+		rpgate: clock-controller@7030010368 {
+			compatible = "sophgo,sg2042-rpgate";
+			reg = <0x70 0x30010368 0x0 0x98>;
+			clocks = <&clkgen GATE_CLK_RP_CPU_NORMAL>;
+			#clock-cells = <1>;
+		};
+
+		clkgen: clock-controller@7030012000 {
+			compatible = "sophgo,sg2042-clkgen";
+			reg = <0x70 0x30012000 0x0 0x1000>;
+			clocks = <&pllclk MPLL_CLK>,
+				 <&pllclk FPLL_CLK>,
+				 <&pllclk DPLL0_CLK>,
+				 <&pllclk DPLL1_CLK>;
+			#clock-cells = <1>;
+		};
+
 		clint_mswi: interrupt-controller@7094000000 {
 			compatible = "sophgo,sg2042-aclint-mswi", "thead,c900-aclint-mswi";
 			reg = <0x00000070 0x94000000 0x00000000 0x00004000>;
@@ -333,6 +378,9 @@  uart0: serial@7040000000 {
 			interrupt-parent = <&intc>;
 			interrupts = <112 IRQ_TYPE_LEVEL_HIGH>;
 			clock-frequency = <500000000>;
+			clocks = <&clkgen GATE_CLK_UART_500M>,
+				 <&clkgen GATE_CLK_APB_UART>;
+			clock-names = "baudclk", "apb_pclk";
 			reg-shift = <2>;
 			reg-io-width = <4>;
 			status = "disabled";