[PATCH 2/8] clock_imx8mm: Add enable_usboh3_clk() for i.MX8M

[Stefano Babic]

Hi Fabio,

On 03.07.21 21:58, Fabio Estevam wrote:
> From: Frieder Schrempf <frieder.schrempf at kontron.de>
> 
> Currently we can't use DM_USB in SPL as the ci_udc driver is not
> ported to DM yet.
> 
> Signed-off-by: Frieder Schrempf <frieder.schrempf at kontron.de>
> Signed-off-by: Fabio Estevam <festevam at denx.de>
> ---
>   arch/arm/include/asm/arch-imx8m/clock.h |  1 +
>   arch/arm/mach-imx/imx8m/clock_imx8mm.c  | 16 ++++++++++++++++
>   2 files changed, 17 insertions(+)
> 
> diff --git a/arch/arm/include/asm/arch-imx8m/clock.h b/arch/arm/include/asm/arch-imx8m/clock.h
> index 77d9428a188a..fcd111c918fd 100644
> --- a/arch/arm/include/asm/arch-imx8m/clock.h
> +++ b/arch/arm/include/asm/arch-imx8m/clock.h
> @@ -276,3 +276,4 @@ int enable_i2c_clk(unsigned char enable, unsigned int i2c_num);
>   int set_clk_enet(enum enet_freq type);
>   int set_clk_eqos(enum enet_freq type);
>   void hab_caam_clock_enable(unsigned char enable);
> +void enable_usboh3_clk(unsigned char enable);
> diff --git a/arch/arm/mach-imx/imx8m/clock_imx8mm.c b/arch/arm/mach-imx/imx8m/clock_imx8mm.c
> index f8e4ec0d9052..dd40e2f1e772 100644
> --- a/arch/arm/mach-imx/imx8m/clock_imx8mm.c
> +++ b/arch/arm/mach-imx/imx8m/clock_imx8mm.c
> @@ -277,6 +277,22 @@ int intpll_configure(enum pll_clocks pll, ulong freq)
>   	return 0;
>   }
>   
> +void enable_usboh3_clk(unsigned char enable)
> +{
> +	if (enable) {
> +		clock_enable(CCGR_USB_MSCALE_PL301, 0);
> +		/* 500M */
> +		clock_set_target_val(USB_BUS_CLK_ROOT, CLK_ROOT_ON | CLK_ROOT_SOURCE_SEL(1));
> +		/* 100M */
> +		clock_set_target_val(USB_CORE_REF_CLK_ROOT, CLK_ROOT_ON | CLK_ROOT_SOURCE_SEL(1));
> +		/* 100M */
> +		clock_set_target_val(USB_PHY_REF_CLK_ROOT, CLK_ROOT_ON | CLK_ROOT_SOURCE_SEL(1));
> +		clock_enable(CCGR_USB_MSCALE_PL301, 1);
> +	} else {
> +		clock_enable(CCGR_USB_MSCALE_PL301, 0);
> +	}
> +}
> +
>   void init_uart_clk(u32 index)
>   {
>   	/*
> 

This breaks phycore-imx8mp, I cannot build it anymore. Could you take a 
look ?

Best regards,
Stefano

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