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| author | Hoegeun Kwon <hoegeun.kwon@samsung.com> | 2017-04-13 09:05:26 +0300 |
|---|---|---|
| committer | Inki Dae <inki.dae@samsung.com> | 2017-05-29 03:50:41 +0300 |
| commit | f2921d8c4899a3d9d7c6326315c24efea2c9efd9 (patch) | |
| tree | 2142206daf9c61b0653ea9b88becf6df9920161d /drivers/gpu | |
| parent | 4013ef48798ae954530bdb8971d3794333e46526 (diff) | |
| download | linux-f2921d8c4899a3d9d7c6326315c24efea2c9efd9.tar.xz | |
drm/exynos: dsi: Fix the parse_dt function
The dsi + panel is a parental relationship, so OF grpah is not needed.
Therefore, the current dsi_parse_dt function will throw an error,
because there is no linked OF graph for the case fimd + dsi + panel.
Parse the Pll burst and esc clock frequency properties in dsi_parse_dt()
and create a bridge_node only if there is an OF graph associated with dsi.
Signed-off-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Andi Shyti <andi.shyti@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_dsi.c | 22 |
1 files changed, 5 insertions, 17 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c index fc4fda738906..24ab77c674ec 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c @@ -1633,7 +1633,6 @@ static int exynos_dsi_parse_dt(struct exynos_dsi *dsi) { struct device *dev = dsi->dev; struct device_node *node = dev->of_node; - struct device_node *ep; int ret; ret = exynos_dsi_of_read_u32(node, "samsung,pll-clock-frequency", @@ -1641,32 +1640,21 @@ static int exynos_dsi_parse_dt(struct exynos_dsi *dsi) if (ret < 0) return ret; - ep = of_graph_get_endpoint_by_regs(node, DSI_PORT_OUT, 0); - if (!ep) { - dev_err(dev, "no output port with endpoint specified\n"); - return -EINVAL; - } - - ret = exynos_dsi_of_read_u32(ep, "samsung,burst-clock-frequency", + ret = exynos_dsi_of_read_u32(node, "samsung,burst-clock-frequency", &dsi->burst_clk_rate); if (ret < 0) - goto end; + return ret; - ret = exynos_dsi_of_read_u32(ep, "samsung,esc-clock-frequency", + ret = exynos_dsi_of_read_u32(node, "samsung,esc-clock-frequency", &dsi->esc_clk_rate); if (ret < 0) - goto end; - - of_node_put(ep); + return ret; dsi->bridge_node = of_graph_get_remote_node(node, DSI_PORT_OUT, 0); if (!dsi->bridge_node) return -EINVAL; -end: - of_node_put(ep); - - return ret; + return 0; } static int exynos_dsi_bind(struct device *dev, struct device *master, |