From 352580870ca64b23a485a6b2ba6febc240b10904 Mon Sep 17 00:00:00 2001
From: Stephen Warren <swarren@nvidia.com>
Date: Wed, 12 Mar 2014 13:10:44 -0600
Subject: [PATCH] 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>
---
board/nvidia/dalmore/pinmux-config-dalmore.h | 16 ++++++++--------
board/nvidia/venice2/pinmux-config-venice2.h | 16 ++++++++--------
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 8c05a1517c1..9dcd5e42af1 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 50868e6488d..b3d68d589a9 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),
--
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