diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_kms.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c index 186422ac552b..fcfd916227d1 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c @@ -544,6 +544,7 @@ static int rcar_du_properties_init(struct rcar_du_device *rcdu) static int rcar_du_vsps_init(struct rcar_du_device *rcdu) { const struct device_node *np = rcdu->dev->of_node; + const char *vsps_prop_name = "renesas,vsps"; struct of_phandle_args args; struct { struct device_node *np; @@ -559,15 +560,21 @@ static int rcar_du_vsps_init(struct rcar_du_device *rcdu) * entry contains a pointer to the VSP DT node and a bitmask of the * connected DU CRTCs. */ - cells = of_property_count_u32_elems(np, "vsps") / rcdu->num_crtcs - 1; + ret = of_property_count_u32_elems(np, vsps_prop_name); + if (ret < 0) { + /* Backward compatibility with old DTBs. */ + vsps_prop_name = "vsps"; + ret = of_property_count_u32_elems(np, vsps_prop_name); + } + cells = ret / rcdu->num_crtcs - 1; if (cells > 1) return -EINVAL; for (i = 0; i < rcdu->num_crtcs; ++i) { unsigned int j; - ret = of_parse_phandle_with_fixed_args(np, "vsps", cells, i, - &args); + ret = of_parse_phandle_with_fixed_args(np, vsps_prop_name, + cells, i, &args); if (ret < 0) goto error; @@ -589,8 +596,8 @@ static int rcar_du_vsps_init(struct rcar_du_device *rcdu) /* * Store the VSP pointer and pipe index in the CRTC. If the - * second cell of the 'vsps' specifier isn't present, default - * to 0 to remain compatible with older DT bindings. + * second cell of the 'renesas,vsps' specifier isn't present, + * default to 0 to remain compatible with older DT bindings. */ rcdu->crtcs[i].vsp = &rcdu->vsps[j]; rcdu->crtcs[i].vsp_pipe = cells >= 1 ? args.args[0] : 0; |