Linux-Amlogic Archive on lore.kernel.org
 help / color / Atom feed
* [PATCH] arm64: dts: meson-a1: add I2C nodes
@ 2019-12-02 11:12 Jian Hu
  0 siblings, 0 replies; only message in thread
From: Jian Hu @ 2019-12-02 11:12 UTC (permalink / raw)
  To: Jerome Brunet, Neil Armstrong
  Cc: Mark Rutland, Rob Herring, Jianxin Pan, Wolfram Sang,
	Martin Blumenstingl, Kevin Hilman, Michael Turquette,
	linux-kernel, devicetree, Jian Hu, linux-i2c, linux-amlogic,
	linux-arm-kernel

There are four I2C controllers in A1 series,
Share the same comptible with AXG.The I2C nodes
depend on pinmux and clock controller.

Signed-off-by: Jian Hu <jian.hu@amlogic.com>
---
 arch/arm64/boot/dts/amlogic/meson-a1.dtsi | 149 ++++++++++++++++++++++
 1 file changed, 149 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
index eab2ecd36aa8..d0a73d953f5e 100644
--- a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
@@ -16,6 +16,13 @@
 	#address-cells = <2>;
 	#size-cells = <2>;
 
+	aliases {
+		i2c0 = &i2c0;
+		i2c1 = &i2c1;
+		i2c2 = &i2c2;
+		i2c3 = &i2c3;
+	};
+
 	cpus {
 		#address-cells = <2>;
 		#size-cells = <0>;
@@ -117,6 +124,46 @@
 				};
 			};
 
+			i2c0: i2c@1400 {
+				compatible = "amlogic,meson-axg-i2c";
+				reg = <0x0 0x1400 0x0 0x24>;
+				interrupts = <GIC_SPI 32 IRQ_TYPE_EDGE_RISING>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+				clocks = <&clkc_periphs CLKID_I2C_M_A>;
+				status = "disabled";
+			};
+
+			i2c1: i2c@5c00 {
+				compatible = "amlogic,meson-axg-i2c";
+				reg = <0x0 0x5c00 0x0 0x24>;
+				interrupts = <GIC_SPI 68 IRQ_TYPE_EDGE_RISING>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+				clocks = <&clkc_periphs CLKID_I2C_M_B>;
+				status = "disabled";
+			};
+
+			i2c2: i2c@6800 {
+				compatible = "amlogic,meson-axg-i2c";
+				reg = <0x0 0x6800 0x0 0x24>;
+				interrupts = <GIC_SPI 76 IRQ_TYPE_EDGE_RISING>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+				clocks = <&clkc_periphs CLKID_I2C_M_C>;
+				status = "disabled";
+			};
+
+			i2c3: i2c@6c00 {
+				compatible = "amlogic,meson-axg-i2c";
+				reg = <0x0 0x6c00 0x0 0x24>;
+				interrupts = <GIC_SPI 78 IRQ_TYPE_EDGE_RISING>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+				clocks = <&clkc_periphs CLKID_I2C_M_D>;
+				status = "disabled";
+			};
+
 			uart_AO: serial@1c00 {
 				compatible = "amlogic,meson-gx-uart",
 					     "amlogic,meson-ao-uart";
@@ -171,3 +218,105 @@
 		#clock-cells = <0>;
 	};
 };
+
+&periphs_pinctrl {
+	i2c0_f11_pins:i2c0-f11 {
+		mux {
+			groups = "i2c0_sck_f11",
+				"i2c0_sda_f12";
+			function = "i2c0";
+			bias-pull-up;
+			drive-strength-microamp = <3000>;
+		};
+	};
+
+	i2c0_f9_pins:i2c0-f9 {
+		mux {
+			groups = "i2c0_sck_f9",
+				"i2c0_sda_f10";
+			function = "i2c0";
+			bias-pull-up;
+			drive-strength-microamp = <3000>;
+		};
+	};
+
+	i2c1_x_pins:i2c1-x {
+		mux {
+			groups = "i2c1_sck_x",
+				"i2c1_sda_x";
+			function = "i2c1";
+			bias-pull-up;
+			drive-strength-microamp = <3000>;
+		};
+	};
+
+	i2c1_a_pins:i2c1-a {
+		mux {
+			groups = "i2c1_sck_a",
+				"i2c1_sda_a";
+			function = "i2c1";
+			bias-pull-up;
+			drive-strength-microamp = <3000>;
+		};
+	};
+
+	i2c2_x0_pins:i2c2-x0 {
+		mux {
+			groups = "i2c2_sck_x0",
+				"i2c2_sda_x1";
+			function = "i2c2";
+			bias-pull-up;
+			drive-strength-microamp = <3000>;
+		};
+	};
+
+	i2c2_x15_pins:i2c2-x15 {
+		mux {
+			groups = "i2c2_sck_x15",
+				"i2c2_sda_x16";
+			function = "i2c2";
+			bias-pull-up;
+			drive-strength-microamp = <3000>;
+		};
+	};
+
+	i2c2_a4_pins:i2c2-a4 {
+		mux {
+			groups = "i2c2_sck_a4",
+				"i2c2_sda_a5";
+			function = "i2c2";
+			bias-pull-up;
+			drive-strength-microamp = <3000>;
+		};
+	};
+
+	i2c2_a8_pins:i2c2-a8 {
+		mux {
+			groups = "i2c2_sck_a8",
+				"i2c2_sda_a9";
+			function = "i2c2";
+			bias-pull-up;
+			drive-strength-microamp = <3000>;
+		};
+	};
+
+	i2c3_x_pins:i2c3-x {
+		mux {
+			groups = "i2c3_sck_x",
+				"i2c3_sda_x";
+			function = "i2c3";
+			bias-pull-up;
+			drive-strength-microamp = <3000>;
+		};
+	};
+
+	i2c3_f_pins:i2c3-f {
+		mux {
+			groups = "i2c3_sck_f",
+				"i2c3_sda_f";
+			function = "i2c3";
+			bias-pull-up;
+			drive-strength-microamp = <3000>;
+		};
+	};
+};
-- 
2.24.0


_______________________________________________
linux-amlogic mailing list
linux-amlogic@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-amlogic

^ permalink raw reply	[flat|nested] only message in thread

only message in thread, back to index

Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-12-02 11:12 [PATCH] arm64: dts: meson-a1: add I2C nodes Jian Hu

Linux-Amlogic Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-amlogic/0 linux-amlogic/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-amlogic linux-amlogic/ https://lore.kernel.org/linux-amlogic \
		linux-amlogic@lists.infradead.org
	public-inbox-index linux-amlogic

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.infradead.lists.linux-amlogic


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git