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imx6: iomux: Add generic function to set RGMII IO voltage on IMX6 SoCs

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This commit provides generic function to set the RGMII/HSIC IO voltage
level on iMX6 devices.

Signed-off-by: Lukasz Majewski <lukma@denx.de>
This commit is contained in:
Lukasz Majewski 2017-10-31 13:26:24 +01:00 committed by Stefano Babic
parent 8ea754da60
commit ec1b26973c
2 changed files with 24 additions and 0 deletions
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13
arch/arm/include/asm/arch-mx6/iomux.h
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@ -178,4 +178,17 @@
|IOMUXC_GPR13_SATA_PHY_3_MASK \ |IOMUXC_GPR13_SATA_PHY_3_MASK \
|IOMUXC_GPR13_SATA_PHY_2_MASK \ |IOMUXC_GPR13_SATA_PHY_2_MASK \
|IOMUXC_GPR13_SATA_PHY_1_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__ */ #endif /* __ASM_ARCH_IOMUX_H__ */

11
arch/arm/include/asm/arch-mx6/sys_proto.h
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@ -6,6 +6,7 @@
*/ */
#include <asm/mach-imx/sys_proto.h> #include <asm/mach-imx/sys_proto.h>
#include <asm/arch/iomux.h>
#define USBPHY_PWD 0x00000000 #define USBPHY_PWD 0x00000000
@ -16,3 +17,13 @@
int imx6_pcie_toggle_power(void); int imx6_pcie_toggle_power(void);
int imx6_pcie_toggle_reset(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);
}