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authorStephen Warren <swarren@nvidia.com>2014-03-12 13:10:44 -0600
committerTom Warren <twarren@nvidia.com>2014-03-26 15:20:56 -0700
commit352580870ca64b23a485a6b2ba6febc240b10904 (patch)
tree4fb5aac6894ecd788829eda7dcfa521c585acc45 /board
parentab6423cae0323e8db2c8fdd0a99138d93fde2137 (diff)
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ARM: tegra: make all I2C ports open-drain
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>
Diffstat (limited to 'board')
-rw-r--r--board/nvidia/dalmore/pinmux-config-dalmore.h16
-rw-r--r--board/nvidia/venice2/pinmux-config-venice2.h16
2 files changed, 16 insertions, 16 deletions
diff --git a/board/nvidia/dalmore/pinmux-config-dalmore.h b/board/nvidia/dalmore/pinmux-config-dalmore.h
index 8c05a15..9dcd5e4 100644
--- a/board/nvidia/dalmore/pinmux-config-dalmore.h
+++ b/board/nvidia/dalmore/pinmux-config-dalmore.h
@@ -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),
diff --git a/board/nvidia/venice2/pinmux-config-venice2.h b/board/nvidia/venice2/pinmux-config-venice2.h
index 50868e6..b3d68d5 100644
--- a/board/nvidia/venice2/pinmux-config-venice2.h
+++ b/board/nvidia/venice2/pinmux-config-venice2.h
@@ -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),