Hi,
On 12/01/2015 11:37, Nikolay Dimitrov wrote:
Hi Ye.Li,
On 01/12/2015 10:46 AM, Ye.Li wrote:
The I2C SDA and SCL require the IOMUX SION bit set to get input signal.
Signed-off-by: Ye.Li B37916@freescale.com
arch/arm/include/asm/arch-mx6/mx6sx_pins.h | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/include/asm/arch-mx6/mx6sx_pins.h b/arch/arm/include/asm/arch-mx6/mx6sx_pins.h index 7c6c1e8..da8c698 100644 --- a/arch/arm/include/asm/arch-mx6/mx6sx_pins.h +++ b/arch/arm/include/asm/arch-mx6/mx6sx_pins.h @@ -420,7 +420,7 @@ enum {
MX6_PAD_KEY_COL4__KPP_COL_4 =IOMUX_PAD(0x03FC, 0x00B4, 0, 0x0000, 0, 0), MX6_PAD_KEY_COL4__ENET2_MDC = IOMUX_PAD(0x03FC, 0x00B4, 1, 0x0000, 0, 0),
MX6_PAD_KEY_COL4__I2C3_SCL =IOMUX_PAD(0x03FC, 0x00B4, 2, 0x07B8, 2, 0),
MX6_PAD_KEY_COL4__I2C3_SCL =IOMUX_PAD(0x03FC, 0x00B4, IOMUX_CONFIG_SION | 2, 0x07B8, 2, 0), MX6_PAD_KEY_COL4__USDHC2_LCTL = IOMUX_PAD(0x03FC, 0x00B4, 3, 0x0000, 0, 0), MX6_PAD_KEY_COL4__AUDMUX_AUD5_RXC = IOMUX_PAD(0x03FC, 0x00B4, 4, 0x0664, 0, 0), MX6_PAD_KEY_COL4__GPIO2_IO_14 = IOMUX_PAD(0x03FC, 0x00B4, 5, 0x0000, 0, 0), @@ -467,7 +467,7 @@ enum {
MX6_PAD_KEY_ROW4__KPP_ROW_4 =IOMUX_PAD(0x0410, 0x00C8, 0, 0x0000, 0, 0), MX6_PAD_KEY_ROW4__ENET2_MDIO = IOMUX_PAD(0x0410, 0x00C8, 1, 0x0770, 3, 0),
MX6_PAD_KEY_ROW4__I2C3_SDA =IOMUX_PAD(0x0410, 0x00C8, 2, 0x07BC, 2, 0),
MX6_PAD_KEY_ROW4__I2C3_SDA =IOMUX_PAD(0x0410, 0x00C8, IOMUX_CONFIG_SION | 2, 0x07BC, 2, 0), MX6_PAD_KEY_ROW4__USDHC1_LCTL = IOMUX_PAD(0x0410, 0x00C8, 3, 0x0000, 0, 0), MX6_PAD_KEY_ROW4__AUDMUX_AUD5_RXFS = IOMUX_PAD(0x0410, 0x00C8, 4, 0x0668, 0, 0), MX6_PAD_KEY_ROW4__GPIO2_IO_19 = IOMUX_PAD(0x0410, 0x00C8, 5, 0x0000, 0, 0),
Usually the SCL is output-only, driven by the I2C master. Why do you need to enable SION bit on SCL, if the pin will be used as output-only?
Right - I do not see why SION should be set.
Regards, Stefano Babic