提交 4677f51a 编写于 作者: A Andrzej Hajda 提交者: Inki Dae

drm/exynos/hdmi: fix PHY configuration sequence

Proper PHY configuration should be as follow:
1. set HDMI clock parents to OSCCLK.
2. reconfigure PHY.
3. set HDMI clock parents to PHY.
4. wait for PLL stabilization.

The patch fixes it and consolidates the code.
Signed-off-by: NAndrzej Hajda <a.hajda@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>
上级 50ec220e
...@@ -1654,15 +1654,11 @@ static void hdmi_mode_apply(struct hdmi_context *hdata) ...@@ -1654,15 +1654,11 @@ static void hdmi_mode_apply(struct hdmi_context *hdata)
else else
hdmi_v14_mode_apply(hdata); hdmi_v14_mode_apply(hdata);
hdmiphy_wait_for_pll(hdata);
hdmi_clk_set_parents(hdata, true);
hdmi_start(hdata, true); hdmi_start(hdata, true);
} }
static void hdmiphy_conf_reset(struct hdmi_context *hdata) static void hdmiphy_conf_reset(struct hdmi_context *hdata)
{ {
hdmi_clk_set_parents(hdata, false);
hdmi_reg_writemask(hdata, HDMI_PHY_RSTOUT, ~0, HDMI_PHY_SW_RSTOUT); hdmi_reg_writemask(hdata, HDMI_PHY_RSTOUT, ~0, HDMI_PHY_SW_RSTOUT);
usleep_range(10000, 12000); usleep_range(10000, 12000);
hdmi_reg_writemask(hdata, HDMI_PHY_RSTOUT, 0, HDMI_PHY_SW_RSTOUT); hdmi_reg_writemask(hdata, HDMI_PHY_RSTOUT, 0, HDMI_PHY_SW_RSTOUT);
...@@ -1680,29 +1676,33 @@ static void hdmiphy_enable_mode_set(struct hdmi_context *hdata, bool enable) ...@@ -1680,29 +1676,33 @@ static void hdmiphy_enable_mode_set(struct hdmi_context *hdata, bool enable)
static void hdmiphy_conf_apply(struct hdmi_context *hdata) static void hdmiphy_conf_apply(struct hdmi_context *hdata)
{ {
int ret; int ret;
int i; const u8 *phy_conf;
i = hdmi_find_phy_conf(hdata, hdata->current_mode.clock * 1000); ret = hdmi_find_phy_conf(hdata, hdata->current_mode.clock * 1000);
if (i < 0) { if (ret < 0) {
DRM_ERROR("failed to find hdmiphy conf\n"); DRM_ERROR("failed to find hdmiphy conf\n");
return; return;
} }
phy_conf = hdata->drv_data->phy_confs.data[ret].conf;
hdmi_clk_set_parents(hdata, false);
hdmiphy_conf_reset(hdata);
hdmiphy_enable_mode_set(hdata, true); hdmiphy_enable_mode_set(hdata, true);
ret = hdmiphy_reg_write_buf(hdata, 0, ret = hdmiphy_reg_write_buf(hdata, 0, phy_conf, 32);
hdata->drv_data->phy_confs.data[i].conf, 32);
if (ret) { if (ret) {
DRM_ERROR("failed to configure hdmiphy\n"); DRM_ERROR("failed to configure hdmiphy\n");
return; return;
} }
hdmiphy_enable_mode_set(hdata, false); hdmiphy_enable_mode_set(hdata, false);
hdmi_clk_set_parents(hdata, true);
usleep_range(10000, 12000); usleep_range(10000, 12000);
hdmiphy_wait_for_pll(hdata);
} }
static void hdmi_conf_apply(struct hdmi_context *hdata) static void hdmi_conf_apply(struct hdmi_context *hdata)
{ {
hdmiphy_conf_reset(hdata);
hdmiphy_conf_apply(hdata); hdmiphy_conf_apply(hdata);
hdmi_start(hdata, false); hdmi_start(hdata, false);
hdmi_conf_init(hdata); hdmi_conf_init(hdata);
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册