[U-Boot] [PATCH 2/6] i.MX6DL: mamoj: Add I2C support

[Jagan Teki]

i.MX6DL Mamoj has i2c3 and i2c4 buses, add support
through DM_I2C with dt definition.

i2c log:
=======
=> i2c bus
Bus 2:  i2c at 021a8000
Bus 3:  i2c at 021f8000
=> i2c dev 2
Setting bus to 2
=> i2c speed 400000
Setting bus speed to 400000 Hz
=> i2c probe
Valid chip addresses: 20 51 53
=> i2c md 53 0xff
00ff: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff    ................
=> i2c md 51 0xff
00ff: a8 08 40 50 09 43 46 52 42 18 80 8e ae a9 d0 53    .. at P.CFRB......S
=> i2c dev 3
Setting bus to 3
=> i2c speed 100000
Setting bus speed to 100000 Hz
=> i2c probe
Valid chip addresses: 08 40 48 4B
=> i2c md 08 0xff
00ff: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................

Signed-off-by: Jagan Teki <jagan at amarulasolutions.com>
Signed-off-by: Simone CIANNI <simone.cianni at bticino.it>
Signed-off-by: Raffaele RECALCATI <raffaele.recalcati at bticino.it>
---
 arch/arm/dts/imx6dl-mamoj.dts  | 28 ++++++++++++++++++++++++++++
 arch/arm/mach-imx/mx6/Kconfig  |  1 +
 configs/imx6dl_mamoj_defconfig |  2 ++
 3 files changed, 31 insertions(+)

diff --git a/arch/arm/dts/imx6dl-mamoj.dts b/arch/arm/dts/imx6dl-mamoj.dts
index 579a72ace2..ae9f2928ae 100644
--- a/arch/arm/dts/imx6dl-mamoj.dts
+++ b/arch/arm/dts/imx6dl-mamoj.dts
@@ -20,6 +20,20 @@
 	status = "okay";
 };
 
+&i2c3 {
+	clock-frequency = <400000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_i2c3>;
+	status = "okay";
+};
+
+&i2c4 {
+	clock-frequency = <100000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_i2c4>;
+	status = "okay";
+};
+
 &uart3 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_uart3>;
@@ -60,6 +74,20 @@
 		>;
 	};
 
+	pinctrl_i2c3: i2c3grp {
+		fsl,pins = <
+			MX6QDL_PAD_GPIO_3__I2C3_SCL     0x4001b8b1
+			MX6QDL_PAD_GPIO_6__I2C3_SDA     0x4001b8b1
+		>;
+	};
+
+	pinctrl_i2c4: i2c4grp {
+		fsl,pins = <
+			MX6QDL_PAD_GPIO_7__I2C4_SCL	0x4001b8b1
+			MX6QDL_PAD_GPIO_8__I2C4_SDA	0x4001b8b1
+		>;
+	};
+
 	pinctrl_uart3: uart3grp {
 		fsl,pins = <
 			MX6QDL_PAD_EIM_D24__UART3_TX_DATA	0x1b0b1
diff --git a/arch/arm/mach-imx/mx6/Kconfig b/arch/arm/mach-imx/mx6/Kconfig
index c6163d0d12..f258a458d4 100644
--- a/arch/arm/mach-imx/mx6/Kconfig
+++ b/arch/arm/mach-imx/mx6/Kconfig
@@ -232,6 +232,7 @@ config TARGET_MX6DL_MAMOJ
 	select DM
 	select DM_ETH
 	select DM_GPIO
+	select DM_I2C
 	select DM_MMC
 	select DM_THERMAL
 	select SPL
diff --git a/configs/imx6dl_mamoj_defconfig b/configs/imx6dl_mamoj_defconfig
index 40b7a500e6..4d5a4613c7 100644
--- a/configs/imx6dl_mamoj_defconfig
+++ b/configs/imx6dl_mamoj_defconfig
@@ -12,6 +12,7 @@ CONFIG_SYS_PROMPT="=> "
 CONFIG_CRC32_VERIFY=y
 CONFIG_CMD_MEMTEST=y
 CONFIG_CMD_GPIO=y
+CONFIG_CMD_I2C=y
 CONFIG_CMD_MMC=y
 CONFIG_CMD_MII=y
 CONFIG_CMD_PING=y
@@ -37,3 +38,4 @@ CONFIG_USB_GADGET_VENDOR_NUM=0x0525
 CONFIG_USB_GADGET_PRODUCT_NUM=0xa4a5
 CONFIG_CI_UDC=y
 CONFIG_IMX_THERMAL=y
+CONFIG_SYS_I2C_MXC=y
-- 
2.14.3