[PATCH v4 2/6] drm/rockchip/dsi: dw-mipi: support RK3399 mipi dsi
From: Sean Paul <hidden>
Date: 2017-02-01 18:41:31
Also in:
dri-devel, linux-devicetree, linux-rockchip, lkml
On Tue, Jan 24, 2017 at 10:38:02AM +0800, Chris Zhong wrote:
quoted hunk ↗ jump to hunk
The vopb/vopl switch register of RK3399 mipi is different from RK3288, the default setting for mipi dsi mode is different too, so add a of_device_id structure to distinguish them, and make sure set the correct mode before mipi phy init. Signed-off-by: Chris Zhong <redacted> Signed-off-by: Mark Yao <redacted> --- Changes in v4: - remove the unrelated change Changes in v3: - base on John Keeping's patch series drivers/gpu/drm/rockchip/dw-mipi-dsi.c | 68 +++++++++++++++++++++++++++++----- 1 file changed, 58 insertions(+), 10 deletions(-)diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c index 45af890..b7b67be 100644 --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
<snip>
quoted hunk ↗ jump to hunk
@@ -1249,6 +1293,10 @@ static int dw_mipi_dsi_bind(struct device *dev, struct device *master, clk_disable_unprepare(dsi->pclk); } + dsi->phy_cfg_clk = devm_clk_get(dev, "phy_cfg"); + if (IS_ERR(dsi->phy_cfg_clk)) + dev_dbg(dev, "have not phy_cfg_clk\n");
You should differentiate between ENODEV and other errors here, returning an error if it's not ENODEV. If it is ENODEV, just set phy_cfg_clk to NULL, then you can remove all of the if (IS_ERR(dsi->phy_cfg_clk) checks everywhere since clk_* functions check for NULL. Sean
+
ret = clk_prepare_enable(dsi->pllref_clk);
if (ret) {
dev_err(dev, "%s: Failed to enable pllref_clk\n", __func__);
--
2.6.3
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