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ARM: tegra: make all I2C ports open-drain

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I2C protocol requires open-drain IOs. Fix the Dalmore and Venice2 pinmux
tables to configure the IOs correctly. Without this, Tegra may actively
drive the lines high while an external device is actively driving the
lines low, which can only lead to bad things.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
master
Stephen Warren 11 years ago committed by Tom Warren
parent ab6423cae0
commit 352580870c
2 changed files with 16 additions and 16 deletions
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  1. 16
      board/nvidia/dalmore/pinmux-config-dalmore.h
  2. 16
      board/nvidia/venice2/pinmux-config-venice2.h

16
board/nvidia/dalmore/pinmux-config-dalmore.h
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@ -132,8 +132,8 @@ static struct pingroup_config tegra114_pinmux_common[] = {
DEFAULT_PINMUX(ULPI_STP, ULPI, NORMAL, NORMAL, OUTPUT),
/* I2C3 pinmux */
I2C_PINMUX(CAM_I2C_SCL, I2C3, NORMAL, NORMAL, INPUT, DEFAULT, DISABLE),
I2C_PINMUX(CAM_I2C_SDA, I2C3, NORMAL, NORMAL, INPUT, DEFAULT, DISABLE),
I2C_PINMUX(CAM_I2C_SCL, I2C3, NORMAL, NORMAL, INPUT, DEFAULT, ENABLE),
I2C_PINMUX(CAM_I2C_SDA, I2C3, NORMAL, NORMAL, INPUT, DEFAULT, ENABLE),
/* VI pinmux */
VI_PINMUX(CAM_MCLK, VI_ALT3, NORMAL, NORMAL, OUTPUT, DEFAULT, DEFAULT),
@ -145,8 +145,8 @@ static struct pingroup_config tegra114_pinmux_common[] = {
VI_PINMUX(GPIO_PBB4, VGP4, NORMAL, NORMAL, OUTPUT, DEFAULT, DEFAULT),
/* I2C2 pinmux */
I2C_PINMUX(GEN2_I2C_SCL, I2C2, NORMAL, NORMAL, INPUT, DEFAULT, DISABLE),
I2C_PINMUX(GEN2_I2C_SDA, I2C2, NORMAL, NORMAL, INPUT, DEFAULT, DISABLE),
I2C_PINMUX(GEN2_I2C_SCL, I2C2, NORMAL, NORMAL, INPUT, DEFAULT, ENABLE),
I2C_PINMUX(GEN2_I2C_SDA, I2C2, NORMAL, NORMAL, INPUT, DEFAULT, ENABLE),
/* UARTD pinmux */
DEFAULT_PINMUX(GMI_A16, UARTD, NORMAL, NORMAL, OUTPUT),
@ -224,8 +224,8 @@ static struct pingroup_config tegra114_pinmux_common[] = {
DEFAULT_PINMUX(KB_ROW9, UARTA, NORMAL, NORMAL, OUTPUT),
/* I2CPWR pinmux (I2C5) */
I2C_PINMUX(PWR_I2C_SCL, I2CPWR, NORMAL, NORMAL, INPUT, DEFAULT, DISABLE),
I2C_PINMUX(PWR_I2C_SDA, I2CPWR, NORMAL, NORMAL, INPUT, DEFAULT, DISABLE),
I2C_PINMUX(PWR_I2C_SCL, I2CPWR, NORMAL, NORMAL, INPUT, DEFAULT, ENABLE),
I2C_PINMUX(PWR_I2C_SDA, I2CPWR, NORMAL, NORMAL, INPUT, DEFAULT, ENABLE),
/* SYSCLK pinmux */
DEFAULT_PINMUX(SYS_CLK_REQ, SYSCLK, NORMAL, NORMAL, OUTPUT),
@ -252,8 +252,8 @@ static struct pingroup_config tegra114_pinmux_common[] = {
DEFAULT_PINMUX(CLK3_OUT, EXTPERIPH3, NORMAL, NORMAL, OUTPUT),
/* I2C1 pinmux */
I2C_PINMUX(GEN1_I2C_SCL, I2C1, NORMAL, NORMAL, INPUT, DEFAULT, DISABLE),
I2C_PINMUX(GEN1_I2C_SDA, I2C1, NORMAL, NORMAL, INPUT, DEFAULT, DISABLE),
I2C_PINMUX(GEN1_I2C_SCL, I2C1, NORMAL, NORMAL, INPUT, DEFAULT, ENABLE),
I2C_PINMUX(GEN1_I2C_SDA, I2C1, NORMAL, NORMAL, INPUT, DEFAULT, ENABLE),
/* UARTB pinmux */
DEFAULT_PINMUX(UART2_CTS_N, UARTB, NORMAL, TRISTATE, INPUT),

16
board/nvidia/venice2/pinmux-config-venice2.h
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@ -124,12 +124,12 @@ static struct pingroup_config tegra124_pinmux_common[] = {
DEFAULT_PINMUX(ULPI_STP, SPI1, NORMAL, NORMAL, INPUT),
/* I2C3 (TPM) pinmux */
I2C_PINMUX(CAM_I2C_SCL, I2C3, NORMAL, NORMAL, INPUT, DEFAULT, DISABLE),
I2C_PINMUX(CAM_I2C_SDA, I2C3, NORMAL, NORMAL, INPUT, DEFAULT, DISABLE),
I2C_PINMUX(CAM_I2C_SCL, I2C3, NORMAL, NORMAL, INPUT, DEFAULT, ENABLE),
I2C_PINMUX(CAM_I2C_SDA, I2C3, NORMAL, NORMAL, INPUT, DEFAULT, ENABLE),
/* I2C2 pinmux */
I2C_PINMUX(GEN2_I2C_SCL, I2C2, NORMAL, NORMAL, INPUT, DEFAULT, DISABLE),
I2C_PINMUX(GEN2_I2C_SDA, I2C2, NORMAL, NORMAL, INPUT, DEFAULT, DISABLE),
I2C_PINMUX(GEN2_I2C_SCL, I2C2, NORMAL, NORMAL, INPUT, DEFAULT, ENABLE),
I2C_PINMUX(GEN2_I2C_SDA, I2C2, NORMAL, NORMAL, INPUT, DEFAULT, ENABLE),
/* UARTD pinmux (UART4 on Servo board, unused) */
DEFAULT_PINMUX(GPIO_PJ7, UARTD, NORMAL, NORMAL, OUTPUT),
@ -198,8 +198,8 @@ static struct pingroup_config tegra124_pinmux_common[] = {
DEFAULT_PINMUX(KB_ROW10, UARTA, UP, TRISTATE, INPUT),
/* I2CPWR pinmux (I2C5) */
I2C_PINMUX(PWR_I2C_SCL, I2CPWR, NORMAL, NORMAL, INPUT, DEFAULT, DISABLE),
I2C_PINMUX(PWR_I2C_SDA, I2CPWR, NORMAL, NORMAL, INPUT, DEFAULT, DISABLE),
I2C_PINMUX(PWR_I2C_SCL, I2CPWR, NORMAL, NORMAL, INPUT, DEFAULT, ENABLE),
I2C_PINMUX(PWR_I2C_SDA, I2CPWR, NORMAL, NORMAL, INPUT, DEFAULT, ENABLE),
/* RTCK pinmux */
DEFAULT_PINMUX(JTAG_RTCK, RTCK, NORMAL, NORMAL, INPUT),
@ -223,8 +223,8 @@ static struct pingroup_config tegra124_pinmux_common[] = {
DEFAULT_PINMUX(CLK3_OUT, EXTPERIPH3, NORMAL, NORMAL, OUTPUT),
/* I2C1 pinmux */
I2C_PINMUX(GEN1_I2C_SCL, I2C1, NORMAL, NORMAL, INPUT, DEFAULT, DISABLE),
I2C_PINMUX(GEN1_I2C_SDA, I2C1, NORMAL, NORMAL, INPUT, DEFAULT, DISABLE),
I2C_PINMUX(GEN1_I2C_SCL, I2C1, NORMAL, NORMAL, INPUT, DEFAULT, ENABLE),
I2C_PINMUX(GEN1_I2C_SDA, I2C1, NORMAL, NORMAL, INPUT, DEFAULT, ENABLE),
/* UARTB, GPS */
DEFAULT_PINMUX(UART2_CTS_N, UARTB, NORMAL, TRISTATE, INPUT),

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