Re: [PATCH 1/2] arm64: dts: ti: k3-j7200-som-p0: main_i2c0 have an ioexpander on the SOM
From: Vignesh Raghavendra <vigneshr@ti.com>
Date: 2020-11-19 14:45:31
Also in:
linux-devicetree, lkml
On 11/19/20 6:56 PM, Peter Ujfalusi wrote:
It is used to control several SOM level muxes to make sure that the correct signals are routed to the correct pin on the SOM <-> CPB connectors. Signed-off-by: Peter Ujfalusi <redacted> ---
Yes, there is indeed a I2C GPIO expander on SOM that's missing from DT today. So this change looks good to me. Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com> Regards Vignesh
quoted hunk ↗ jump to hunk
.../dts/ti/k3-j7200-common-proc-board.dts | 11 -------- arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi | 26 +++++++++++++++++++ 2 files changed, 26 insertions(+), 11 deletions(-)diff --git a/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts index 6b3863108571..2721137d8943 100644 --- a/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts +++ b/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts@@ -43,13 +43,6 @@ J721E_WKUP_IOPAD(0x0098, PIN_INPUT, 0) /* (L4) MCU_MDIO0_MDIO */ }; &main_pmx0 { - main_i2c0_pins_default: main-i2c0-pins-default { - pinctrl-single,pins = < - J721E_IOPAD(0xd4, PIN_INPUT_PULLUP, 0) /* (V3) I2C0_SCL */ - J721E_IOPAD(0xd8, PIN_INPUT_PULLUP, 0) /* (W2) I2C0_SDA */ - >; - }; - main_i2c1_pins_default: main-i2c1-pins-default { pinctrl-single,pins = < J721E_IOPAD(0xdc, PIN_INPUT_PULLUP, 3) /* (U3) ECAP0_IN_APWM_OUT.I2C1_SCL */@@ -146,10 +139,6 @@ &cpsw_port1 { }; &main_i2c0 { - pinctrl-names = "default"; - pinctrl-0 = <&main_i2c0_pins_default>; - clock-frequency = <400000>; - exp1: gpio@20 { compatible = "ti,tca6416"; reg = <0x20>;diff --git a/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi index fbd17d38f6b6..7b5e9aa0324e 100644 --- a/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi +++ b/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi@@ -48,6 +48,15 @@ J721E_WKUP_IOPAD(0x28, PIN_INPUT, 1) /* (A7) MCU_OSPI0_D7.MCU_HYPERBUS0_DQ7 */ }; }; +&main_pmx0 { + main_i2c0_pins_default: main-i2c0-pins-default { + pinctrl-single,pins = < + J721E_IOPAD(0xd4, PIN_INPUT_PULLUP, 0) /* (V3) I2C0_SCL */ + J721E_IOPAD(0xd8, PIN_INPUT_PULLUP, 0) /* (W2) I2C0_SDA */ + >; + }; +}; + &hbmc { /* OSPI and HBMC are muxed inside FSS, Bootloader will enable * appropriate node based on board detection@@ -131,3 +140,20 @@ &mailbox0_cluster10 { &mailbox0_cluster11 { status = "disabled"; }; + +&main_i2c0 { + pinctrl-names = "default"; + pinctrl-0 = <&main_i2c0_pins_default>; + clock-frequency = <400000>; + + exp_som: gpio@21 { + compatible = "ti,tca6408"; + reg = <0x21>; + gpio-controller; + #gpio-cells = <2>; + gpio-line-names = "USB2.0_MUX_SEL", "CANUART_MUX1_SEL0", + "CANUART_MUX2_SEL0", "CANUART_MUX_SEL1", + "UART/LIN_MUX_SEL", "TRC_D17/AUDIO_REFCLK_SEL", + "GPIO_LIN_EN", "CAN_STB"; + }; +};
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