[Intel-gfx] [PATCH 2/2] drm/hdcp: DP HDCP2.2 errata LC_Send_L_Prime=16

Nautiyal, Ankit K ankit.k.nautiyal at intel.com
Wed Mar 24 04:45:39 UTC 2021


Change is as per the errata. LGTM.

Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal at intel.com>

On 1/27/2021 1:54 PM, Anshuman Gupta wrote:
> Fix LC_Send_L_Prime message timeout to 16 as documented
> in DP HDCP 2.2 errata page 3.
>
> https://www.digital-cp.com/sites/default/files/HDCP%202_2_DisplayPort_Errata_v3_0.pdf
>
> Cc: Ramalingam C <ramalingam.c at intel.com>
> Signed-off-by: Anshuman Gupta <anshuman.gupta at intel.com>
> ---
>   include/drm/drm_hdcp.h | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/include/drm/drm_hdcp.h b/include/drm/drm_hdcp.h
> index 2b165a0f434f..0b1111e3228e 100644
> --- a/include/drm/drm_hdcp.h
> +++ b/include/drm/drm_hdcp.h
> @@ -231,7 +231,7 @@ struct hdcp2_rep_stream_ready {
>   #define HDCP_2_2_PAIRING_TIMEOUT_MS		200
>   #define HDCP_2_2_DP_PAIRING_READ_TIMEOUT_MS	5
>   #define	HDCP_2_2_HDMI_LPRIME_TIMEOUT_MS		20
> -#define HDCP_2_2_DP_LPRIME_TIMEOUT_MS		7
> +#define HDCP_2_2_DP_LPRIME_TIMEOUT_MS		16
>   #define HDCP_2_2_RECVID_LIST_TIMEOUT_MS		3000
>   #define HDCP_2_2_STREAM_READY_TIMEOUT_MS	100
>   


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