RE: [PATCH v2 04/16] drm: renesas: rzg2l_mipi_dsi: Move global timings into hardware info struct

[Biju Das]

Hi Tommaso Merciai,

Thanks for the feedback.

> -----Original Message-----
> From: Tommaso Merciai <tommaso.merciai.xr@xxxxxxxxxxxxxx>
> Sent: 05 August 2026 16:29
> Subject: Re: [PATCH v2 04/16] drm: renesas: rzg2l_mipi_dsi: Move global timings into hardware info struct
> 
> Hi Biju,
> Thanks for your patch.
> 
> On Wed, Jul 29, 2026 at 01:54:56PM +0100, Biju wrote:
> > From: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> >
> > Move rzg2l_mipi_dsi_global_timings and its array size out of the
> > hardcoded ARRAY_SIZE reference in rzg2l_mipi_dsi_dphy_init() and into
> > the struct rzg2l_mipi_dsi_hw_info. This allows future hardware
> > variants to supply their own timing tables rather than sharing a
> > single global array, making the driver more extensible without code duplication.
> >
> > Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> > ---
> > v1->v2:
> >  * No change.
> > ---
> >  drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c | 10 ++++++++--
> >  1 file changed, 8 insertions(+), 2 deletions(-)
> >
> > 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 1538eeece2b5..180384c10264 100644
> > --- a/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c
> > +++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c
> > @@ -54,6 +54,8 @@ struct rzg2l_mipi_dsi_hw_info {
> >  		const u8 *table;
> >  		const u8 table_size;
> >  	} cpg_plldsi;
> > +	const struct rzg2l_mipi_dsi_timings *dsi_global_timings;
> > +	unsigned int num_dsi_global_timings;
> >  	u32 phy_reg_offset;
> >  	u32 link_reg_offset;
> >  	u32 dphyctrl0_init_val;
> > @@ -488,8 +490,8 @@ static int rzg2l_mipi_dsi_dphy_init(struct rzg2l_mipi_dsi *dsi,
> >  	u32 dphytim3;
> >
> >  	/* All DSI global operation timings are set with recommended setting */
> > -	for (i = 0; i < ARRAY_SIZE(rzg2l_mipi_dsi_global_timings); ++i) {
> > -		dphy_timings = &rzg2l_mipi_dsi_global_timings[i];
> > +	for (i = 0; i < dsi->info->num_dsi_global_timings; ++i) {
> > +		dphy_timings = &dsi->info->dsi_global_timings[i];
> >  		if (hsfreq <= dphy_timings->hsfreq_max)
> >  			break;
> >  	}
> > @@ -1519,6 +1521,8 @@ static const struct rzg2l_mipi_dsi_hw_info rzv2h_mipi_dsi_info = {
> >  	.cpg_plldsi.limits = rzv2h_plldsi_limits,
> >  	.cpg_plldsi.table = rzv2h_cpg_div_table,
> >  	.cpg_plldsi.table_size = ARRAY_SIZE(rzv2h_cpg_div_table),
> 
> > +	.dsi_global_timings = rzg2l_mipi_dsi_global_timings,
> > +	.num_dsi_global_timings = ARRAY_SIZE(rzg2l_mipi_dsi_global_timings),
> 
> Are we sure that rzv2h use these new entries:

Good catch. Will remove these entries for RZ/V2H as it uses different phy_init that uses
It's own parameter.

Cheers,
Biju