hdmi phy configuration is platform specific, which can be adusted
according to the board to get the best SI
Signed-off-by: Andy Yan <andy.yan@xxxxxxxxxxxxxx>
---
Changes in v13:
- split phy configuration from patch#4
Changes in v12: None
Changes in v11: None
Changes in v10: None
Changes in v9: None
Changes in v8: None
Changes in v7: None
Changes in v6: None
Changes in v5: None
Changes in v4: None
Changes in v3: None
drivers/gpu/drm/imx/imx-hdmi.c | 85 +++++++-----------------------------
drivers/gpu/drm/imx/imx-hdmi.h | 29 ++++++++++++
drivers/gpu/drm/imx/imx-hdmi_pltfm.c | 57 ++++++++++++++++++++++++
3 files changed, 101 insertions(+), 70 deletions(-)
diff --git a/drivers/gpu/drm/imx/imx-hdmi.c b/drivers/gpu/drm/imx/imx-hdmi.c
index 4c3047f..9503728 100644
--- a/drivers/gpu/drm/imx/imx-hdmi.c
+++ b/drivers/gpu/drm/imx/imx-hdmi.c
@@ -711,76 +711,14 @@ static void imx_hdmi_phy_sel_interface_control(struct imx_hdmi *hdmi, u8 enable)
HDMI_PHY_CONF0_SELDIPIF_MASK);
}
-enum {
- RES_8,
- RES_10,
- RES_12,
- RES_MAX,
-};
-
-struct mpll_config {
- unsigned long mpixelclock;
- struct {
- u16 cpce;
- u16 gmp;
- } res[RES_MAX];
-};
-
-static const struct mpll_config mpll_config[] = {
- {
- 45250000, {
- { 0x01e0, 0x0000 },
- { 0x21e1, 0x0000 },
- { 0x41e2, 0x0000 }
- },
- }, {
- 92500000, {
- { 0x0140, 0x0005 },
- { 0x2141, 0x0005 },
- { 0x4142, 0x0005 },
- },
- }, {
- 148500000, {
- { 0x00a0, 0x000a },
- { 0x20a1, 0x000a },
- { 0x40a2, 0x000a },
- },
- }, {
- ~0UL, {
- { 0x00a0, 0x000a },
- { 0x2001, 0x000f },
- { 0x4002, 0x000f },
- },
- }
-};
-
-struct curr_ctrl {
- unsigned long mpixelclock;
- u16 curr[RES_MAX];
-};
-
-static const struct curr_ctrl curr_ctrl[] = {
- /* pixelclk bpp8 bpp10 bpp12 */
- {
- 54000000, { 0x091c, 0x091c, 0x06dc },
- }, {
- 58400000, { 0x091c, 0x06dc, 0x06dc },
- }, {
- 72000000, { 0x06dc, 0x06dc, 0x091c },
- }, {
- 74250000, { 0x06dc, 0x0b5c, 0x091c },
- }, {
- 118800000, { 0x091c, 0x091c, 0x06dc },
- }, {
- 216000000, { 0x06dc, 0x0b5c, 0x091c },
- }
-};
-
static int hdmi_phy_configure(struct imx_hdmi *hdmi, unsigned char prep,
unsigned char res, int cscon)
{
unsigned res_idx, i;
u8 val, msec;
+ const struct mpll_config *mpll_config = hdmi->plat_data->mpll_cfg;
+ const struct curr_ctrl *curr_ctrl = hdmi->plat_data->cur_ctr;
+ const struct sym_term *sym_term = hdmi->plat_data->sym_term;
if (prep)
return -EINVAL;
@@ -826,7 +764,7 @@ static int hdmi_phy_configure(struct imx_hdmi *hdmi, unsigned char prep,
hdmi_phy_test_clear(hdmi, 0);
/* PLL/MPLL Cfg - always match on final entry */
- for (i = 0; i < ARRAY_SIZE(mpll_config) - 1; i++)
+ for (i = 0; mpll_config[i].mpixelclock != (~0UL); i++)
if (hdmi->hdmi_data.video_mode.mpixelclock <=
mpll_config[i].mpixelclock)
break;
@@ -834,12 +772,12 @@ static int hdmi_phy_configure(struct imx_hdmi *hdmi, unsigned char prep,
hdmi_phy_i2c_write(hdmi, mpll_config[i].res[res_idx].cpce, 0x06);
hdmi_phy_i2c_write(hdmi, mpll_config[i].res[res_idx].gmp, 0x15);
- for (i = 0; i < ARRAY_SIZE(curr_ctrl); i++)
+ for (i = 0; curr_ctrl[i].mpixelclock != (~0UL); i++)
if (hdmi->hdmi_data.video_mode.mpixelclock <=
curr_ctrl[i].mpixelclock)
break;
- if (i >= ARRAY_SIZE(curr_ctrl)) {
+ if (curr_ctrl[i].mpixelclock == (~0UL)) {
dev_err(hdmi->dev, "Pixel clock %d - unsupported by HDMI\n",
hdmi->hdmi_data.video_mode.mpixelclock);
return -EINVAL;
@@ -850,10 +788,17 @@ static int hdmi_phy_configure(struct imx_hdmi *hdmi, unsigned char prep,
hdmi_phy_i2c_write(hdmi, 0x0000, 0x13); /* PLLPHBYCTRL */
hdmi_phy_i2c_write(hdmi, 0x0006, 0x17);
+
+ for (i = 0; sym_term[i].mpixelclock != (~0UL); i++)
+ if (hdmi->hdmi_data.video_mode.mpixelclock <=
+ sym_term[i].mpixelclock)
+ break;
+
/* RESISTANCE TERM 133Ohm Cfg */
- hdmi_phy_i2c_write(hdmi, 0x0005, 0x19); /* TXTERM */
+ hdmi_phy_i2c_write(hdmi, sym_term[i].term, 0x19); /* TXTERM */
/* PREEMP Cgf 0.00 */
- hdmi_phy_i2c_write(hdmi, 0x800d, 0x09); /* CKSYMTXCTRL */
+ hdmi_phy_i2c_write(hdmi, sym_term[i].sym_ctr, 0x09); /* CKSYMTXCTRL */
+
/* TX/CK LVL 10 */
hdmi_phy_i2c_write(hdmi, 0x01ad, 0x0E); /* VLEVCTRL */
/* REMOVE CLK TERM */
diff --git a/drivers/gpu/drm/imx/imx-hdmi.h b/drivers/gpu/drm/imx/imx-hdmi.h
index 14e593e..bced9ef 100644
--- a/drivers/gpu/drm/imx/imx-hdmi.h
+++ b/drivers/gpu/drm/imx/imx-hdmi.h
@@ -1037,6 +1037,35 @@ enum imx_hdmi_devtype {
struct imx_hdmi_plat_data {
enum imx_hdmi_devtype dev_type;
+ const struct mpll_config *mpll_cfg;
+ const struct curr_ctrl *cur_ctr;
+ const struct sym_term *sym_term;
+};
+
+enum {
+ RES_8,
+ RES_10,
+ RES_12,
+ RES_MAX,
+};
+
+struct mpll_config {
+ unsigned long mpixelclock;
+ struct {
+ u16 cpce;
+ u16 gmp;
+ } res[RES_MAX];
+};
+
+struct curr_ctrl {
+ unsigned long mpixelclock;
+ u16 curr[RES_MAX];
+};
+
+struct sym_term {
+ unsigned long mpixelclock;
+ u16 sym_ctr; /*clock symbol and transmitter control*/
+ u16 term; /*transmission termination value*/
};
int imx_hdmi_bind(struct device *dev, struct device *master,
diff --git a/drivers/gpu/drm/imx/imx-hdmi_pltfm.c b/drivers/gpu/drm/imx/imx-hdmi_pltfm.c
index a7983f2..519a22d 100644
--- a/drivers/gpu/drm/imx/imx-hdmi_pltfm.c
+++ b/drivers/gpu/drm/imx/imx-hdmi_pltfm.c
@@ -31,6 +31,57 @@ struct imx_hdmi_priv {
struct regmap *regmap;
};
+static const struct mpll_config imx_mpll_cfg[] = {
+ {
+ 45250000, {
+ { 0x01e0, 0x0000 },
+ { 0x21e1, 0x0000 },
+ { 0x41e2, 0x0000 }
+ },
+ }, {
+ 92500000, {
+ { 0x0140, 0x0005 },
+ { 0x2141, 0x0005 },
+ { 0x4142, 0x0005 },
+ },
+ }, {
+ 148500000, {
+ { 0x00a0, 0x000a },
+ { 0x20a1, 0x000a },
+ { 0x40a2, 0x000a },
+ },
+ }, {
+ ~0UL, {
+ { 0x00a0, 0x000a },
+ { 0x2001, 0x000f },
+ { 0x4002, 0x000f },
+ },
+ }
+};
+
+static const struct curr_ctrl imx_cur_ctr[] = {
+ /* pixelclk bpp8 bpp10 bpp12 */
+ {
+ 54000000, { 0x091c, 0x091c, 0x06dc },
+ }, {
+ 58400000, { 0x091c, 0x06dc, 0x06dc },
+ }, {
+ 72000000, { 0x06dc, 0x06dc, 0x091c },
+ }, {
+ 74250000, { 0x06dc, 0x0b5c, 0x091c },
+ }, {
+ 118800000, { 0x091c, 0x091c, 0x06dc },
+ }, {
+ 216000000, { 0x06dc, 0x0b5c, 0x091c },
+ }
+};
+
+static const struct sym_term imx_sym_term[] = {
+ /*pixelclk symbol term*/
+ { 148500000, 0x800d, 0x0005 },
+ { ~0UL, 0x0000, 0x0000 }
+};
+
static int imx_hdmi_parse_dt(struct imx_hdmi_priv *hdmi)
{
struct device_node *np = hdmi->dev->of_node;
@@ -103,10 +154,16 @@ static struct drm_encoder_funcs imx_hdmi_encoder_funcs = {
};
static struct imx_hdmi_plat_data imx6q_hdmi_drv_data = {
+ .mpll_cfg = imx_mpll_cfg,
+ .cur_ctr = imx_cur_ctr,
+ .sym_term = imx_sym_term,
.dev_type = IMX6Q_HDMI,
};
static struct imx_hdmi_plat_data imx6dl_hdmi_drv_data = {
+ .mpll_cfg = imx_mpll_cfg,
+ .cur_ctr = imx_cur_ctr,
+ .sym_term = imx_sym_term,
.dev_type = IMX6DL_HDMI,
};
--
1.9.1
--
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