[PATCH v2 4/8] drm/rockchip/dsi: correct phy parameter setting
Nickey Yang
nickey.yang at rock-chips.com
Tue Sep 26 00:55:19 PDT 2017
As MIPI PHY document show, icpctrl<3..0> and lpfctrl<5..0>
should depend on frequency,so fix it.
Signed-off-by: Nickey Yang <nickey.yang at rock-chips.com>
---
drivers/gpu/drm/rockchip/dw-mipi-dsi.c | 98 ++++++++++++++++++++++++----------
1 file changed, 70 insertions(+), 28 deletions(-)
diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
index 191037c..20d3f36 100644
--- a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
+++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
@@ -267,10 +267,21 @@
#define VCO_IN_CAP_CON_HIGH (0x2 << 1)
#define REF_BIAS_CUR_SEL BIT(0)
-#define CP_CURRENT_3MA BIT(3)
+#define CP_CURRENT_1_5UA 0x1
+#define CP_CURRENT_4_5UA 0x2
+#define CP_CURRENT_7_5UA 0x6
+#define CP_CURRENT_6UA 0x9
+#define CP_CURRENT_12UA 0xb
+#define CP_CURRENT_SEL(val) ((val) & 0xf)
#define CP_PROGRAM_EN BIT(7)
+
+#define LPF_RESISTORS_15_5KOHM 0x1
+#define LPF_RESISTORS_13KOHM 0x2
+#define LPF_RESISTORS_11_5KOHM 0x4
+#define LPF_RESISTORS_10_5KOHM 0x8
+#define LPF_RESISTORS_8KOHM 0x10
#define LPF_PROGRAM_EN BIT(6)
-#define LPF_RESISTORS_20_KOHM 0
+#define LPF_RESISTORS_SEL(val) ((val) & 0x3f)
#define HSFREQRANGE_SEL(val) (((val) & 0x3f) << 1)
@@ -400,32 +411,63 @@ enum dw_mipi_dsi_mode {
DW_MIPI_DSI_VID_MODE,
};
-struct dphy_pll_testdin_map {
+struct dphy_pll_parameter_map {
unsigned int max_mbps;
- u8 testdin;
+ u8 hsfreqrange;
+ u8 icpctrl;
+ u8 lpfctrl;
};
/* The table is based on 27MHz DPHY pll reference clock. */
-static const struct dphy_pll_testdin_map dptdin_map[] = {
- { 90, 0x00}, { 100, 0x10}, { 110, 0x20}, { 130, 0x01},
- { 140, 0x11}, { 150, 0x21}, { 170, 0x02}, { 180, 0x12},
- { 200, 0x22}, { 220, 0x03}, { 240, 0x13}, { 250, 0x23},
- { 270, 0x04}, { 300, 0x14}, { 330, 0x05}, { 360, 0x15},
- { 400, 0x25}, { 450, 0x06}, { 500, 0x16}, { 550, 0x07},
- { 600, 0x17}, { 650, 0x08}, { 700, 0x18}, { 750, 0x09},
- { 800, 0x19}, { 850, 0x29}, { 900, 0x39}, { 950, 0x0a},
- {1000, 0x1a}, {1050, 0x2a}, {1100, 0x3a}, {1150, 0x0b},
- {1200, 0x1b}, {1250, 0x2b}, {1300, 0x3b}, {1350, 0x0c},
- {1400, 0x1c}, {1450, 0x2c}, {1500, 0x3c}
+static const struct dphy_pll_parameter_map dppa_map[] = {
+ { 90, 0x00, CP_CURRENT_1_5UA, LPF_RESISTORS_13KOHM},
+ { 100, 0x10, CP_CURRENT_1_5UA, LPF_RESISTORS_13KOHM},
+ { 110, 0x20, CP_CURRENT_1_5UA, LPF_RESISTORS_13KOHM},
+ { 130, 0x01, CP_CURRENT_1_5UA, LPF_RESISTORS_15_5KOHM},
+ { 140, 0x11, CP_CURRENT_1_5UA, LPF_RESISTORS_15_5KOHM},
+ { 150, 0x21, CP_CURRENT_1_5UA, LPF_RESISTORS_15_5KOHM},
+ { 170, 0x02, CP_CURRENT_6UA, LPF_RESISTORS_13KOHM},
+ { 180, 0x12, CP_CURRENT_6UA, LPF_RESISTORS_13KOHM},
+ { 200, 0x22, CP_CURRENT_6UA, LPF_RESISTORS_13KOHM},
+ { 220, 0x03, CP_CURRENT_4_5UA, LPF_RESISTORS_13KOHM},
+ { 240, 0x13, CP_CURRENT_4_5UA, LPF_RESISTORS_13KOHM},
+ { 250, 0x23, CP_CURRENT_4_5UA, LPF_RESISTORS_13KOHM},
+ { 270, 0x04, CP_CURRENT_6UA, LPF_RESISTORS_11_5KOHM},
+ { 300, 0x14, CP_CURRENT_6UA, LPF_RESISTORS_11_5KOHM},
+ { 330, 0x05, CP_CURRENT_1_5UA, LPF_RESISTORS_15_5KOHM},
+ { 360, 0x15, CP_CURRENT_1_5UA, LPF_RESISTORS_15_5KOHM},
+ { 400, 0x25, CP_CURRENT_1_5UA, LPF_RESISTORS_15_5KOHM},
+ { 450, 0x06, CP_CURRENT_7_5UA, LPF_RESISTORS_11_5KOHM},
+ { 500, 0x16, CP_CURRENT_7_5UA, LPF_RESISTORS_11_5KOHM},
+ { 550, 0x07, CP_CURRENT_7_5UA, LPF_RESISTORS_10_5KOHM},
+ { 600, 0x17, CP_CURRENT_7_5UA, LPF_RESISTORS_10_5KOHM},
+ { 650, 0x08, CP_CURRENT_7_5UA, LPF_RESISTORS_11_5KOHM},
+ { 700, 0x18, CP_CURRENT_7_5UA, LPF_RESISTORS_11_5KOHM},
+ { 750, 0x09, CP_CURRENT_7_5UA, LPF_RESISTORS_11_5KOHM},
+ { 800, 0x19, CP_CURRENT_7_5UA, LPF_RESISTORS_11_5KOHM},
+ { 850, 0x29, CP_CURRENT_7_5UA, LPF_RESISTORS_11_5KOHM},
+ { 900, 0x39, CP_CURRENT_7_5UA, LPF_RESISTORS_11_5KOHM},
+ { 950, 0x0a, CP_CURRENT_12UA, LPF_RESISTORS_8KOHM},
+ {1000, 0x1a, CP_CURRENT_12UA, LPF_RESISTORS_8KOHM},
+ {1050, 0x2a, CP_CURRENT_12UA, LPF_RESISTORS_8KOHM},
+ {1100, 0x3a, CP_CURRENT_12UA, LPF_RESISTORS_8KOHM},
+ {1150, 0x0b, CP_CURRENT_12UA, LPF_RESISTORS_10_5KOHM},
+ {1200, 0x1b, CP_CURRENT_12UA, LPF_RESISTORS_10_5KOHM},
+ {1250, 0x2b, CP_CURRENT_12UA, LPF_RESISTORS_10_5KOHM},
+ {1300, 0x3b, CP_CURRENT_12UA, LPF_RESISTORS_10_5KOHM},
+ {1350, 0x0c, CP_CURRENT_12UA, LPF_RESISTORS_10_5KOHM},
+ {1400, 0x1c, CP_CURRENT_12UA, LPF_RESISTORS_10_5KOHM},
+ {1450, 0x2c, CP_CURRENT_12UA, LPF_RESISTORS_10_5KOHM},
+ {1500, 0x3c, CP_CURRENT_12UA, LPF_RESISTORS_10_5KOHM}
};
-static int max_mbps_to_testdin(unsigned int max_mbps)
+static int max_mbps_to_parameter(unsigned int max_mbps)
{
int i;
- for (i = 0; i < ARRAY_SIZE(dptdin_map); i++)
- if (dptdin_map[i].max_mbps > max_mbps)
- return dptdin_map[i].testdin;
+ for (i = 0; i < ARRAY_SIZE(dppa_map); i++)
+ if (dppa_map[i].max_mbps > max_mbps)
+ return i;
return -EINVAL;
}
@@ -507,16 +549,16 @@ static inline unsigned int ns2ui(struct dw_mipi_dsi *dsi, int ns)
static int dw_mipi_dsi_phy_init(struct dw_mipi_dsi *dsi)
{
- int ret, testdin, vco, val;
+ int ret, i, vco, val;
vco = (dsi->lane_mbps < 200) ? 0 : (dsi->lane_mbps + 100) / 200;
- testdin = max_mbps_to_testdin(dsi->lane_mbps);
- if (testdin < 0) {
+ i = max_mbps_to_parameter(dsi->lane_mbps);
+ if (i < 0) {
dev_err(dsi->dev,
- "failed to get testdin for %dmbps lane clock\n",
+ "failed to get parameter for %dmbps lane clock\n",
dsi->lane_mbps);
- return testdin;
+ return i;
}
/* Start by clearing PHY state */
@@ -537,13 +579,13 @@ static int dw_mipi_dsi_phy_init(struct dw_mipi_dsi *dsi)
REF_BIAS_CUR_SEL);
dw_mipi_dsi_phy_write(dsi, PLL_CP_CONTROL_PLL_LOCK_BYPASS,
- CP_CURRENT_3MA);
+ CP_CURRENT_SEL(dppa_map[i].icpctrl));
dw_mipi_dsi_phy_write(dsi, PLL_LPF_AND_CP_CONTROL,
CP_PROGRAM_EN | LPF_PROGRAM_EN |
- LPF_RESISTORS_20_KOHM);
+ LPF_RESISTORS_SEL(dppa_map[i].lpfctrl));
dw_mipi_dsi_phy_write(dsi, HS_RX_CONTROL_OF_LANE_0,
- HSFREQRANGE_SEL(testdin));
+ HSFREQRANGE_SEL(dppa_map[i].hsfreqrange));
dw_mipi_dsi_phy_write(dsi, PLL_INPUT_DIVIDER_RATIO,
INPUT_DIVIDER(dsi->input_div));
@@ -632,7 +674,7 @@ static int dw_mipi_dsi_get_lane_bps(struct dw_mipi_dsi *dsi,
{
unsigned long mpclk, tmp;
unsigned int target_mbps = 1000;
- unsigned int max_mbps = dptdin_map[ARRAY_SIZE(dptdin_map) - 1].max_mbps;
+ unsigned int max_mbps = dppa_map[ARRAY_SIZE(dppa_map) - 1].max_mbps;
int bpp;
unsigned long best_freq = 0;
int lanes = dsi->lanes;
--
1.9.1
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