On Wed, 2016-08-17 at 11:25 +0200, Christoph Fritz wrote: > 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 @Uwe and Fabio: Can I get your Ack on this? @Shawn: Can you queue this patch for upstream? -- 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
