Re: [PATCH 2/2] clk: qcom: x1e80100-dispcc: Add USB4 router link resets

From: Taniya Das

Date: Tue Nov 18 2025 - 13:08:48 EST




On 11/18/2025 11:03 PM, Konrad Dybcio wrote:
> From: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
>
> The router link clock branches also feature some reset logic, which is
> required to properly power sequence the hardware for DP tunneling over
> USB4.
>
> Describe these missing resets.
>
> Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
> ---
> drivers/clk/qcom/dispcc-x1e80100.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/clk/qcom/dispcc-x1e80100.c b/drivers/clk/qcom/dispcc-x1e80100.c
> index 40069eba41f2..aa7fd43969f9 100644
> --- a/drivers/clk/qcom/dispcc-x1e80100.c
> +++ b/drivers/clk/qcom/dispcc-x1e80100.c
> @@ -1618,6 +1618,9 @@ static struct clk_regmap *disp_cc_x1e80100_clocks[] = {
>
> static const struct qcom_reset_map disp_cc_x1e80100_resets[] = {
> [DISP_CC_MDSS_CORE_BCR] = { 0x8000 },
> + [DISP_CC_MDSS_DPTX0_USB_ROUTER_LINK_INTF_CLK_ARES] = { .reg = 0x8044, .bit = 2 },
> + [DISP_CC_MDSS_DPTX1_USB_ROUTER_LINK_INTF_CLK_ARES] = { .reg = 0x8068, .bit = 2 },
> + [DISP_CC_MDSS_DPTX2_USB_ROUTER_LINK_INTF_CLK_ARES] = { .reg = 0x8088, .bit = 2 },


Reviewed-by: Taniya Das <taniya.das@xxxxxxxxxxxxxxxx>

--
Thanks,
Taniya Das