From ec1b26973cad9398104e740f96c36ef0a11d301d Mon Sep 17 00:00:00 2001 From: Lukasz Majewski Date: Tue, 31 Oct 2017 13:26:24 +0100 Subject: imx6: iomux: Add generic function to set RGMII IO voltage on IMX6 SoCs This commit provides generic function to set the RGMII/HSIC IO voltage level on iMX6 devices. Signed-off-by: Lukasz Majewski --- 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 907cb40..ee3a565 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 b22a7a0..72ab7d8 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 +#include #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); +} -- cgit v1.1