[U-Boot] [PATCH] imx6: iomux: Add generic function to set RGMII IO voltage on IMX6 SoCs

[Stefano Babic]

On 31/10/2017 13:26, Lukasz Majewski wrote:
> This commit provides generic function to set the RGMII/HSIC IO voltage
> level on iMX6 devices.
> 
> Signed-off-by: Lukasz Majewski <lukma at 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);
> +}
> 

Applied to u-boot-imx, -master, thanke !

Best regards,
Stefano Babic

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