[PATCH v4 2/4] ARM: at91/dt: sama5d3: add i2c gpio pinctrl
From: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Date: 2020-02-25 15:50:33
Also in:
linux-devicetree, linux-i2c, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
From: Kamel Bouhara <kamel.bouhara@bootlin.com> Add the i2c gpio pinctrls to support the i2c bus recovery Signed-off-by: Kamel Bouhara <kamel.bouhara@bootlin.com> [codrin.ciubotariu@microchip.com: removed gpio pull-ups] Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com> --- Changes in v4: - added Acked-by tag from Ludovic; Changes in v3: - removed gpio pull-ups; Changes in v2: - none; arch/arm/boot/dts/sama5d3.dtsi | 33 ++++++++++++++++++++++++++++++--- 1 file changed, 30 insertions(+), 3 deletions(-)
diff --git a/arch/arm/boot/dts/sama5d3.dtsi b/arch/arm/boot/dts/sama5d3.dtsi
index 203d40be70a5..f11b018e9173 100644
--- a/arch/arm/boot/dts/sama5d3.dtsi
+++ b/arch/arm/boot/dts/sama5d3.dtsi@@ -159,8 +159,11 @@ dmas = <&dma0 2 AT91_DMA_CFG_PER_ID(7)>, <&dma0 2 AT91_DMA_CFG_PER_ID(8)>; dma-names = "tx", "rx"; - pinctrl-names = "default"; + pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c0>; + pinctrl-1 = <&pinctrl_i2c0_gpio>; + sda-gpios = <&pioA 30 GPIO_ACTIVE_HIGH>; + scl-gpios = <&pioA 31 GPIO_ACTIVE_HIGH>; #address-cells = <1>; #size-cells = <0>; clocks = <&twi0_clk>;
@@ -174,8 +177,11 @@ dmas = <&dma0 2 AT91_DMA_CFG_PER_ID(9)>, <&dma0 2 AT91_DMA_CFG_PER_ID(10)>; dma-names = "tx", "rx"; - pinctrl-names = "default"; + pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c1>; + pinctrl-1 = <&pinctrl_i2c1_gpio>; + sda-gpios = <&pioC 26 GPIO_ACTIVE_HIGH>; + scl-gpios = <&pioC 27 GPIO_ACTIVE_HIGH>; #address-cells = <1>; #size-cells = <0>; clocks = <&twi1_clk>;
@@ -357,8 +363,11 @@ dmas = <&dma1 2 AT91_DMA_CFG_PER_ID(11)>, <&dma1 2 AT91_DMA_CFG_PER_ID(12)>; dma-names = "tx", "rx"; - pinctrl-names = "default"; + pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c2>; + pinctrl-1 = <&pinctrl_i2c2_gpio>; + sda-gpios = <&pioA 18 GPIO_ACTIVE_HIGH>; + scl-gpios = <&pioA 19 GPIO_ACTIVE_HIGH>; #address-cells = <1>; #size-cells = <0>; clocks = <&twi2_clk>;
@@ -639,6 +648,12 @@ <AT91_PIOA 30 AT91_PERIPH_A AT91_PINCTRL_NONE /* PA30 periph A TWD0 pin, conflicts with URXD1, ISI_VSYNC */ AT91_PIOA 31 AT91_PERIPH_A AT91_PINCTRL_NONE>; /* PA31 periph A TWCK0 pin, conflicts with UTXD1, ISI_HSYNC */ }; + + pinctrl_i2c0_gpio: i2c0-gpio { + atmel,pins = + <AT91_PIOA 30 AT91_PERIPH_GPIO AT91_PINCTRL_NONE + AT91_PIOA 31 AT91_PERIPH_GPIO AT91_PINCTRL_NONE>; + }; }; i2c1 {
@@ -647,6 +662,12 @@ <AT91_PIOC 26 AT91_PERIPH_B AT91_PINCTRL_NONE /* PC26 periph B TWD1 pin, conflicts with SPI1_NPCS1, ISI_D11 */ AT91_PIOC 27 AT91_PERIPH_B AT91_PINCTRL_NONE>; /* PC27 periph B TWCK1 pin, conflicts with SPI1_NPCS2, ISI_D10 */ }; + + pinctrl_i2c1_gpio: i2c1-gpio { + atmel,pins = + <AT91_PIOC 26 AT91_PERIPH_GPIO AT91_PINCTRL_NONE + AT91_PIOC 27 AT91_PERIPH_GPIO AT91_PINCTRL_NONE>; + }; }; i2c2 {
@@ -655,6 +676,12 @@ <AT91_PIOA 18 AT91_PERIPH_B AT91_PINCTRL_NONE /* TWD2 pin, conflicts with LCDDAT18, ISI_D2 */ AT91_PIOA 19 AT91_PERIPH_B AT91_PINCTRL_NONE>; /* TWCK2 pin, conflicts with LCDDAT19, ISI_D3 */ }; + + pinctrl_i2c2_gpio: i2c2-gpio { + atmel,pins = + <AT91_PIOA 18 AT91_PERIPH_GPIO AT91_PINCTRL_NONE + AT91_PIOA 19 AT91_PERIPH_GPIO AT91_PINCTRL_NONE>; + }; }; isi {
--
2.20.1
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