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drm/rockchip: Load crtc devices in preferred order

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On RK3399 the VOPL is loaded before VOPB and get registered as crtc-0.
However, on RK3288 and PX30 VOPB is gets registered as crtc-0 instead of
VOPL.

With VOPL registered as crtc-0 the kernel kms client is not able to
enable 4K display modes for console use on RK3399.

Load VOPB before VOPL to help kernel kms client make use of 4K display
modes for console use on RK3399.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20240908145511.3331451-8-jonas@kwiboo.se
This commit is contained in:
Jonas Karlman 2024-09-08 14:55:04 +00:00 committed by Heiko Stuebner
parent 28f0ae48e7
commit 0c4558a1bc
1 changed files with 23 additions and 0 deletions
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23
drivers/gpu/drm/rockchip/rockchip_drm_drv.c
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@ -354,11 +354,34 @@ static void rockchip_drm_match_remove(struct device *dev)
device_link_del(link);
}
/* list of preferred vop devices */
static const char *const rockchip_drm_match_preferred[] = {
"rockchip,rk3399-vop-big",
NULL,
};
static struct component_match *rockchip_drm_match_add(struct device *dev)
{
struct component_match *match = NULL;
struct device_node *port;
int i;
/* add preferred vop device match before adding driver device matches */
for (i = 0; ; i++) {
port = of_parse_phandle(dev->of_node, "ports", i);
if (!port)
break;
if (of_device_is_available(port->parent) &&
of_device_compatible_match(port->parent,
rockchip_drm_match_preferred))
drm_of_component_match_add(dev, &match,
component_compare_of,
port->parent);
of_node_put(port);
}
for (i = 0; i < num_rockchip_sub_drivers; i++) {
struct platform_driver *drv = rockchip_sub_drivers[i];
struct device *p = NULL, *d;