[PATCH] clk: imx8mp: add USB suspend clock

[Sascha Hauer]

On Thu, Feb 02, 2023 at 01:05:24PM +0100, Lucas Stach wrote:
> Linux added another USB clock to properly describe the controller root
> and suspend clocks. As new DTs are using this clock to keep the shared
> gate enabled, access to the USB controller will hang Barebox without
> support for this clock.
> 
> Fixes: 0d682a2997a8 ("dts: update to v6.2-rc5")
> Signed-off-by: Lucas Stach <l.stach at pengutronix.de>
> ---
>  drivers/clk/imx/clk-imx8mp.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/clk/imx/clk-imx8mp.c b/drivers/clk/imx/clk-imx8mp.c
> index a1611be1833e..40578c2a4bd6 100644
> --- a/drivers/clk/imx/clk-imx8mp.c
> +++ b/drivers/clk/imx/clk-imx8mp.c
> @@ -665,7 +665,8 @@ static int imx8mp_clocks_init(struct device_node *ccm_np)
>  	hws[IMX8MP_CLK_UART2_ROOT] = imx_clk_hw_gate4("uart2_root_clk", "uart2", ccm_base + 0x44a0, 0);
>  	hws[IMX8MP_CLK_UART3_ROOT] = imx_clk_hw_gate4("uart3_root_clk", "uart3", ccm_base + 0x44b0, 0);
>  	hws[IMX8MP_CLK_UART4_ROOT] = imx_clk_hw_gate4("uart4_root_clk", "uart4", ccm_base + 0x44c0, 0);
> -	hws[IMX8MP_CLK_USB_ROOT] = imx_clk_hw_gate4("usb_root_clk", "osc_32k", ccm_base + 0x44d0, 0);
> +	hws[IMX8MP_CLK_USB_ROOT] = imx_clk_hw_gate2_shared2("usb_root_clk", "hsio_axi", ccm_base + 0x44d0, 0);
> +	hws[IMX8MP_CLK_USB_SUSP] = imx_clk_hw_gate2_shared2("usb_suspend_clk", "osc_32k", ccm_base + 0x44d0, 0);

Do old dts files work with this change? In other words, can I apply this
directly to master or do I have to squash this change into the commit
that changes imx8mp.dtsi to use this clock?

Sascha


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