On 7/9/25 11:55 PM, Chris Brandt wrote:

> Before the MIPI DSI clock source can be configured, the target divide
> ratio needs to be known.
> 
> Signed-off-by: Chris Brandt <[email protected]>
> ---
>  drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c | 17 +++++++++++++++++
>  1 file changed, 17 insertions(+)
> 
> diff --git a/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c 
> b/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c
> index 4ad0be03a5b4..a8796df43f75 100644
> --- a/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c
> +++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c
[...]
> @@ -666,6 +667,22 @@ static int rzg2l_mipi_dsi_host_attach(struct 
> mipi_dsi_host *host,
>  
>       drm_bridge_add(&dsi->bridge);
>  
> +     /* Report required division ratio setting for the MIPI clock dividers

   /* should be on a line of its own (unless you do a networking patch)...

> +      * Assume the default clock source is FOUTPOSTDIV (PLL/2) being fed to 
> the DSI-PHY, but also
> +      * the DSI-PHY must be 16x the MIPI-DSI HS clock.
> +      *
> +      * pllclk/2 = vclk * DSI divider

   Why no spaces around / while there are spaces around *?

[...]

MBR, Sergey

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