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path: root/drivers/gpu/drm/tegra
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Diffstat (limited to 'drivers/gpu/drm/tegra')
-rw-r--r--drivers/gpu/drm/tegra/sor.c19
1 files changed, 17 insertions, 2 deletions
diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c
index 79602debf231..beb8fda25826 100644
--- a/drivers/gpu/drm/tegra/sor.c
+++ b/drivers/gpu/drm/tegra/sor.c
@@ -410,6 +410,8 @@ struct tegra_sor {
struct clk *clk_dp;
struct clk *clk;
+ u8 xbar_cfg[5];
+
struct drm_dp_aux *aux;
struct drm_info_list *debugfs_files;
@@ -1814,7 +1816,7 @@ static void tegra_sor_edp_enable(struct drm_encoder *encoder)
/* XXX not in TRM */
for (value = 0, i = 0; i < 5; i++)
- value |= SOR_XBAR_CTRL_LINK0_XSEL(i, sor->soc->xbar_cfg[i]) |
+ value |= SOR_XBAR_CTRL_LINK0_XSEL(i, sor->xbar_cfg[i]) |
SOR_XBAR_CTRL_LINK1_XSEL(i, i);
tegra_sor_writel(sor, 0x00000000, SOR_XBAR_POL);
@@ -2550,7 +2552,7 @@ static void tegra_sor_hdmi_enable(struct drm_encoder *encoder)
/* XXX not in TRM */
for (value = 0, i = 0; i < 5; i++)
- value |= SOR_XBAR_CTRL_LINK0_XSEL(i, sor->soc->xbar_cfg[i]) |
+ value |= SOR_XBAR_CTRL_LINK0_XSEL(i, sor->xbar_cfg[i]) |
SOR_XBAR_CTRL_LINK1_XSEL(i, i);
tegra_sor_writel(sor, 0x00000000, SOR_XBAR_POL);
@@ -3171,6 +3173,8 @@ MODULE_DEVICE_TABLE(of, tegra_sor_of_match);
static int tegra_sor_parse_dt(struct tegra_sor *sor)
{
struct device_node *np = sor->dev->of_node;
+ u32 xbar_cfg[5];
+ unsigned int i;
u32 value;
int err;
@@ -3188,6 +3192,17 @@ static int tegra_sor_parse_dt(struct tegra_sor *sor)
sor->pad = TEGRA_IO_PAD_HDMI_DP0 + sor->index;
}
+ err = of_property_read_u32_array(np, "nvidia,xbar-cfg", xbar_cfg, 5);
+ if (err < 0) {
+ /* fall back to default per-SoC XBAR configuration */
+ for (i = 0; i < 5; i++)
+ sor->xbar_cfg[i] = sor->soc->xbar_cfg[i];
+ } else {
+ /* copy cells to SOR XBAR configuration */
+ for (i = 0; i < 5; i++)
+ sor->xbar_cfg[i] = xbar_cfg[i];
+ }
+
return 0;
}