Signed-off-by: Christoph Fritz <chf.fritz@xxxxxxxxxxxxxx> --- arch/arm/boot/dts/imx6sx-pinfunc.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/arch/arm/boot/dts/imx6sx-pinfunc.h b/arch/arm/boot/dts/imx6sx-pinfunc.h index bb9c6b7..42c4c80 100644 --- a/arch/arm/boot/dts/imx6sx-pinfunc.h +++ b/arch/arm/boot/dts/imx6sx-pinfunc.h @@ -308,6 +308,20 @@ #define MX6SX_PAD_ENET1_RX_CLK__VDEC_DEBUG_35 0x008C 0x03D4 0x0000 0x8 0x0 #define MX6SX_PAD_ENET1_RX_CLK__PCIE_CTRL_DEBUG_29 0x008C 0x03D4 0x0000 0x9 0x0 #define MX6SX_PAD_ENET1_TX_CLK__ENET1_TX_CLK 0x0090 0x03D8 0x0000 0x0 0x0 +/* + * SION bit is necessary for ENET1_REF_CLK1 (ENET2_REF_CLK2 untested) if it is + * used as clock output of IMX6SX_CLK_ENET_REF (ENET1_TX_CLK) to e.g. supply a + * PHY in RMII mode. This configuration is valid if: + * - bit 1 in field IMX6SX_GPR1_FEC_CLOCK_PAD_DIR_MASK is set + * - bit 1 in field IMX6SX_GPR1_FEC_CLOCK_MUX_SEL_MASK unset + * It seems to be a silicon bug that in this configuration ENET1_TX reference + * clock isn't provided automatically. According to i.MX6SX reference manual + * (IOMUXC_GPR_GPR1 field descriptions: ENET1_CLK_SEL, Rev. 0 from 2/2015) it + * should be the case. + * So this might have unwanted side effects for other hardware units that are + * also connected to that pin and using respective function as input (e.g. + * UART1's DTR handling on MX6SX_PAD_ENET1_TX_CLK__UART1_DTR_B). + */ #define MX6SX_PAD_ENET1_TX_CLK__ENET1_REF_CLK1 0x0090 0x03D8 0x0760 0x1 0x1 #define MX6SX_PAD_ENET1_TX_CLK__AUDMUX_AUD4_RXD 0x0090 0x03D8 0x0644 0x2 0x1 #define MX6SX_PAD_ENET1_TX_CLK__UART1_DTR_B 0x0090 0x03D8 0x0000 0x3 0x0 -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
