This commit provides generic function to set the RGMII/HSIC IO voltage level on iMX6 devices.
Signed-off-by: Lukasz Majewski lukma@denx.de ---
arch/arm/include/asm/arch-mx6/iomux.h | 13 +++++++++++++ arch/arm/include/asm/arch-mx6/sys_proto.h | 11 +++++++++++ 2 files changed, 24 insertions(+)
diff --git a/arch/arm/include/asm/arch-mx6/iomux.h b/arch/arm/include/asm/arch-mx6/iomux.h index 907cb408ff..ee3a56583b 100644 --- a/arch/arm/include/asm/arch-mx6/iomux.h +++ b/arch/arm/include/asm/arch-mx6/iomux.h @@ -178,4 +178,17 @@ |IOMUXC_GPR13_SATA_PHY_3_MASK \ |IOMUXC_GPR13_SATA_PHY_2_MASK \ |IOMUXC_GPR13_SATA_PHY_1_MASK) + +/* + * Setup RGMII voltage levels on iMX6 SoC - the + * + * IOMUXC_SW_PAD_CTL_GRP_DDR_TYPE_RGMII - register + * + * 1P2V_IO - USB_HSIC, MIPI_HSI + * 1P5V_IO - ENET pins + */ +#define IOMUXC_SW_PAD_CTL_GRP_DDR_TYPE_RGMII 0x020e0790 +#define DDR_SEL_1P2V_IO (0x2 << 18) +#define DDR_SEL_1P5V_IO (0x3 << 18) + #endif /* __ASM_ARCH_IOMUX_H__ */ diff --git a/arch/arm/include/asm/arch-mx6/sys_proto.h b/arch/arm/include/asm/arch-mx6/sys_proto.h index b22a7a0f8b..72ab7d814f 100644 --- a/arch/arm/include/asm/arch-mx6/sys_proto.h +++ b/arch/arm/include/asm/arch-mx6/sys_proto.h @@ -6,6 +6,7 @@ */
#include <asm/mach-imx/sys_proto.h> +#include <asm/arch/iomux.h>
#define USBPHY_PWD 0x00000000
@@ -16,3 +17,13 @@
int imx6_pcie_toggle_power(void); int imx6_pcie_toggle_reset(void); + +/** + * iomuxc_set_rgmii_io_voltage - set voltage level of RGMII/USB pins + * + * @param io_vol - the voltage IO level of pins + */ +static inline void iomuxc_set_rgmii_io_voltage(int io_vol) +{ + __raw_writel(io_vol, IOMUXC_SW_PAD_CTL_GRP_DDR_TYPE_RGMII); +}