Hi Prabhakar, On Mon, May 12, 2025 at 07:23:25PM +0100, Prabhakar wrote: > From: Lad Prabhakar <prabhakar.mahadev-lad...@bp.renesas.com> > > In preparation for adding support for the Renesas RZ/V2H(P) SoC, make the > "rst" reset control optional in the MIPI DSI driver. The RZ/V2H(P) SoC > does not provide this reset line, and attempting to acquire it using the > mandatory API causes probe failure. > > Switching to devm_reset_control_get_optional_exclusive() ensures > compatibility with both SoCs that provide this reset line and those that > do not, such as RZ/V2H(P). > > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad...@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+rene...@ideasonboard.com> > --- > v4->v5: > - New patch > --- > drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > 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 00c2bc6e9d6c..5fc607be0c46 100644 > --- a/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c > +++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c > @@ -748,7 +748,7 @@ static int rzg2l_mipi_dsi_probe(struct platform_device > *pdev) > if (IS_ERR(dsi->vclk)) > return PTR_ERR(dsi->vclk); > > - dsi->rstc = devm_reset_control_get_exclusive(dsi->dev, "rst"); > + dsi->rstc = devm_reset_control_get_optional_exclusive(dsi->dev, "rst"); > if (IS_ERR(dsi->rstc)) > return dev_err_probe(dsi->dev, PTR_ERR(dsi->rstc), > "failed to get rst\n"); -- Regards, Laurent Pinchart
