Thread (15 messages) 15 messages, 3 authors, 2013-08-12

[PATCH 4/4] ARM: sun6i: Enable clock support in the DTSI

From: emilio@elopez.com.ar (Emilio López)
Date: 2013-07-31 01:37:02
Also in: lkml

Hi Maxime,

Overall this looks good to me, but I have some small comments:

El 30/07/13 11:44, Maxime Ripard escribi?:
quoted hunk ↗ jump to hunk
Now that the clock driver has support for the A31 clocks, we can add
them to the DTSI and start using them in the relevant hardware blocks.

Signed-off-by: Maxime Ripard <redacted>
---
 arch/arm/boot/dts/sun6i-a31.dtsi | 137 ++++++++++++++++++++++++++++++++++++---
 1 file changed, 127 insertions(+), 10 deletions(-)
diff --git a/arch/arm/boot/dts/sun6i-a31.dtsi b/arch/arm/boot/dts/sun6i-a31.dtsi
index 0d13dc6..c6a3a91 100644
--- a/arch/arm/boot/dts/sun6i-a31.dtsi
+++ b/arch/arm/boot/dts/sun6i-a31.dtsi
@@ -51,13 +51,130 @@
 
 	clocks {
 		#address-cells = <1>;
-		#size-cells = <0>;
+		#size-cells = <1>;
+		ranges;
 
-		osc: oscillator {
+		osc24M: hosc {
Please use osc24M and osc32k instead of hosc and losc, respectively.
 			#clock-cells = <0>;
 			compatible = "fixed-clock";
 			clock-frequency = <24000000>;
Is osc24M not gatable on A31?
 		};
+
+		osc32k: losc {
+			#clock-cells = <0>;
+			compatible = "fixed-clock";
+			clock-frequency = <32768>;
+		};
+
+		pll1: pll1 at 01c20000 {
+			#clock-cells = <0>;
+			compatible = "allwinner,sun6i-pll1-clk";
+			reg = <0x01c20000 0x4>;
+			clocks = <&osc24M>;
+		};
+
+		/*
+		 * This is a dummy clock, to be used as placeholder on
+		 * other mux clocks when a specific parent clock is not
+		 * yet implemented. It should be dropped when the driver
+		 * is complete.
+		 */
+		pll6: pll6 {
+			#clock-cells = <0>;
+			compatible = "fixed-clock";
+			clock-frequency = <0>;
+		};
+
+		cpu: cpu at 01c20050 {
+			#clock-cells = <0>;
+			compatible = "allwinner,sun4i-cpu-clk";
+			reg = <0x01c20050 0x4>;
+			clocks = <&osc32k>, <&osc24M>, <&pll1>, <&pll1>;
Listing pll1 twice doesn't sound correct, but vendor code seems to
indicate so. A comment to clarify it's not a typo would be good I think.
+		};
+
+		axi: axi at 01c20050 {
+			#clock-cells = <0>;
+			compatible = "allwinner,sun4i-axi-clk";
+			reg = <0x01c20050 0x4>;
+			clocks = <&cpu>;
+		};
+
+		ahb1_mux: ahb1_mux at 01c20054 {
+			#clock-cells = <0>;
+			compatible = "allwinner,sun6i-ahb1-mux-clk";
+			reg = <0x01c20054 0x4>;
+			clocks = <&osc32k>, <&osc24M>, <&axi>, <&pll6>;
+		};
+
+		ahb1: ahb1 at 01c20054 {
+			#clock-cells = <0>;
+			compatible = "allwinner,sun4i-ahb-clk";
+			reg = <0x01c20054 0x4>;
+			clocks = <&ahb1_mux>;
+		};
Depending on when this lands, I believe these two above could be merged
into one with the refactoring introduced on my patchset.
+
+		ahb1_gates: ahb1_gates at 01c20060 {
+			#clock-cells = <1>;
+			compatible = "allwinner,sun6i-a31-ahb1-gates-clk";
+			reg = <0x01c20060 0x8>;
+			clocks = <&ahb1>;
+			clock-output-names = "ahb1_mipidsi", "ahb1_ss",
+					"ahb1_dma", "ahb1_mmc0", "ahb1_mmc1",
+					"ahb1_mmc2", "ahb1_mmc3", "ahb1_nand1",
+					"ahb1_nand0", "ahb1_sdram",
+					"ahb1_gmac", "ahb1_ts", "ahb1_hstimer",
+					"ahb1_spi0", "ahb1_spi1", "ahb1_spi2",
+					"ahb1_spi3", "ahb1_otg", "ahb1_ehci0",
+					"ahb1_ehci1", "ahb1_ohci0",
+					"ahb1_ohci1", "ahb1_ohci2", "ahb1_ve",
+					"ahb1_lcd0", "ahb1_lcd1", "ahb1_csi",
+					"ahb1_hdmi", "ahb1_de0", "ahb1_de1",
+					"ahb1_fe0", "ahb1_fe1", "ahb1_mp",
+					"ahb1_gpu", "ahb1_deu0", "ahb1_deu1",
+					"ahb1_drc0", "ahb1_drc1";
+		};
+
+		apb1: apb1 at 01c20054 {
+			#clock-cells = <0>;
+			compatible = "allwinner,sun4i-apb0-clk";
+			reg = <0x01c20054 0x4>;
+			clocks = <&ahb1>;
+		};
+
+		apb1_gates: apb1_gates at 01c20060 {
+			#clock-cells = <1>;
+			compatible = "allwinner,sun6i-a31-apb1-gates-clk";
+			reg = <0x01c20068 0x4>;
+			clocks = <&apb1>;
+			clock-output-names = "apb1_codec", "apb1_digital_mic",
+					"apb1_pio", "apb1_daudio0",
+					"apb1_daudio1";
+		};
+
+		apb2_mux: apb2_mux at 01c20058 {
+			#clock-cells = <0>;
+			compatible = "allwinner,sun4i-apb1-mux-clk";
+			reg = <0x01c20058 0x4>;
+			clocks = <&osc32k>, <&osc24M>, <&pll6>, <&pll6>;
+		};
+
+		apb2: apb2 at 01c20058 {
+			#clock-cells = <0>;
+			compatible = "allwinner,sun6i-apb2-div-clk";
+			reg = <0x01c20058 0x4>;
+			clocks = <&apb2_mux>;
+		};
Ditto for apb2_mux and apb2.
quoted hunk ↗ jump to hunk
+
+		apb2_gates: apb2_gates at 01c2006c {
+			#clock-cells = <1>;
+			compatible = "allwinner,sun6i-a31-apb2-gates-clk";
+			reg = <0x01c2006c 0x8>;
+			clocks = <&apb2>;
+			clock-output-names = "apb2_i2c0", "apb2_i2c1",
+					"apb2_i2c2", "apb2_i2c3", "apb2_uart0",
+					"apb2_uart1", "apb2_uart2", "apb2_uart3",
+					"apb2_uart4", "apb2_uart5";
+		};
 	};
 
 	soc at 01c20000 {
@@ -69,7 +186,7 @@
 			compatible = "allwinner,sun6i-a31-pinctrl";
 			reg = <0x01c20800 0x400>;
 			interrupts = <0 11 1>, <0 15 1>, <0 16 1>, <0 17 1>;
-			clocks = <&osc>;
+			clocks = <&apb1_gates 5>;
 			gpio-controller;
 			interrupt-controller;
 			#address-cells = <1>;
@@ -92,7 +209,7 @@
 				     <0 20 1>,
 				     <0 21 1>,
 				     <0 22 1>;
-			clocks = <&osc>;
+			clocks = <&osc24M>;
 		};
 
 		wdt1: watchdog at 01c20ca0 {
@@ -106,7 +223,7 @@
 			interrupts = <0 0 1>;
 			reg-shift = <2>;
 			reg-io-width = <4>;
-			clocks = <&osc>;
+			clocks = <&apb2_gates 16>;
 			status = "disabled";
 		};
 
@@ -116,7 +233,7 @@
 			interrupts = <0 1 1>;
 			reg-shift = <2>;
 			reg-io-width = <4>;
-			clocks = <&osc>;
+			clocks = <&apb2_gates 17>;
 			status = "disabled";
 		};
 
@@ -126,7 +243,7 @@
 			interrupts = <0 2 1>;
 			reg-shift = <2>;
 			reg-io-width = <4>;
-			clocks = <&osc>;
+			clocks = <&apb2_gates 18>;
 			status = "disabled";
 		};
 
@@ -136,7 +253,7 @@
 			interrupts = <0 3 1>;
 			reg-shift = <2>;
 			reg-io-width = <4>;
-			clocks = <&osc>;
+			clocks = <&apb2_gates 19>;
 			status = "disabled";
 		};
 
@@ -146,7 +263,7 @@
 			interrupts = <0 4 1>;
 			reg-shift = <2>;
 			reg-io-width = <4>;
-			clocks = <&osc>;
+			clocks = <&apb2_gates 20>;
 			status = "disabled";
 		};
 
@@ -156,7 +273,7 @@
 			interrupts = <0 5 1>;
 			reg-shift = <2>;
 			reg-io-width = <4>;
-			clocks = <&osc>;
+			clocks = <&apb2_gates 21>;
 			status = "disabled";
 		};
 
Thanks for working on this!

Emilio
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