[PATCH] drm/msm/dsi: support CPHY mode for 7nm pll/phy
Jonathan Marek
jonathan at marek.ca
Mon Feb 15 16:27:44 UTC 2021
Add the required changes to support 7nm pll/phy in CPHY mode.
This adds a "qcom,dsi-phy-cphy-mode" property for the PHY node to enable
the CPHY mode.
Signed-off-by: Jonathan Marek <jonathan at marek.ca>
---
.../devicetree/bindings/display/msm/dsi.txt | 1 +
drivers/gpu/drm/msm/dsi/dsi.c | 12 +--
drivers/gpu/drm/msm/dsi/dsi.h | 6 +-
drivers/gpu/drm/msm/dsi/dsi.xml.h | 2 +
drivers/gpu/drm/msm/dsi/dsi_host.c | 34 +++++--
drivers/gpu/drm/msm/dsi/phy/dsi_phy.c | 49 +++++++++-
drivers/gpu/drm/msm/dsi/phy/dsi_phy.h | 3 +
drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c | 89 ++++++++++++++-----
drivers/gpu/drm/msm/dsi/pll/dsi_pll.c | 4 +-
drivers/gpu/drm/msm/dsi/pll/dsi_pll.h | 5 +-
drivers/gpu/drm/msm/dsi/pll/dsi_pll_7nm.c | 71 +++++++++------
11 files changed, 210 insertions(+), 66 deletions(-)
diff --git a/Documentation/devicetree/bindings/display/msm/dsi.txt b/Documentation/devicetree/bindings/display/msm/dsi.txt
index b9a64d3ff184..7ffc86a9816b 100644
--- a/Documentation/devicetree/bindings/display/msm/dsi.txt
+++ b/Documentation/devicetree/bindings/display/msm/dsi.txt
@@ -124,6 +124,7 @@ Required properties:
Optional properties:
- qcom,dsi-phy-regulator-ldo-mode: Boolean value indicating if the LDO mode PHY
regulator is wanted.
+- qcom,dsi-phy-cphy-mode: Boolean value indicating if CPHY mode is wanted.
- qcom,mdss-mdp-transfer-time-us: Specifies the dsi transfer time for command mode
panels in microseconds. Driver uses this number to adjust
the clock rate according to the expected transfer time.
diff --git a/drivers/gpu/drm/msm/dsi/dsi.c b/drivers/gpu/drm/msm/dsi/dsi.c
index 627048851d99..68d8547f7264 100644
--- a/drivers/gpu/drm/msm/dsi/dsi.c
+++ b/drivers/gpu/drm/msm/dsi/dsi.c
@@ -13,7 +13,7 @@ struct drm_encoder *msm_dsi_get_encoder(struct msm_dsi *msm_dsi)
return msm_dsi->encoder;
}
-static int dsi_get_phy(struct msm_dsi *msm_dsi)
+static int dsi_get_phy(struct msm_dsi *msm_dsi, bool *cphy_mode)
{
struct platform_device *pdev = msm_dsi->pdev;
struct platform_device *phy_pdev;
@@ -29,6 +29,7 @@ static int dsi_get_phy(struct msm_dsi *msm_dsi)
if (phy_pdev)
msm_dsi->phy = platform_get_drvdata(phy_pdev);
+ *cphy_mode = of_property_read_bool(phy_node, "qcom,dsi-phy-cphy-mode");
of_node_put(phy_node);
if (!phy_pdev || !msm_dsi->phy) {
@@ -65,6 +66,7 @@ static void dsi_destroy(struct msm_dsi *msm_dsi)
static struct msm_dsi *dsi_init(struct platform_device *pdev)
{
struct msm_dsi *msm_dsi;
+ bool cphy_mode;
int ret;
if (!pdev)
@@ -79,13 +81,13 @@ static struct msm_dsi *dsi_init(struct platform_device *pdev)
msm_dsi->pdev = pdev;
platform_set_drvdata(pdev, msm_dsi);
- /* Init dsi host */
- ret = msm_dsi_host_init(msm_dsi);
+ /* GET dsi PHY */
+ ret = dsi_get_phy(msm_dsi, &cphy_mode);
if (ret)
goto destroy_dsi;
- /* GET dsi PHY */
- ret = dsi_get_phy(msm_dsi);
+ /* Init dsi host */
+ ret = msm_dsi_host_init(msm_dsi, cphy_mode);
if (ret)
goto destroy_dsi;
diff --git a/drivers/gpu/drm/msm/dsi/dsi.h b/drivers/gpu/drm/msm/dsi/dsi.h
index 78ef5d4ed922..8db4edc286ee 100644
--- a/drivers/gpu/drm/msm/dsi/dsi.h
+++ b/drivers/gpu/drm/msm/dsi/dsi.h
@@ -108,7 +108,7 @@ struct drm_encoder *msm_dsi_get_encoder(struct msm_dsi *msm_dsi);
struct msm_dsi_pll;
#ifdef CONFIG_DRM_MSM_DSI_PLL
struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev,
- enum msm_dsi_phy_type type, int dsi_id);
+ enum msm_dsi_phy_type type, bool cphy_mode, int id);
void msm_dsi_pll_destroy(struct msm_dsi_pll *pll);
int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll,
struct clk **byte_clk_provider, struct clk **pixel_clk_provider);
@@ -118,7 +118,7 @@ int msm_dsi_pll_set_usecase(struct msm_dsi_pll *pll,
enum msm_dsi_phy_usecase uc);
#else
static inline struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev,
- enum msm_dsi_phy_type type, int id) {
+ enum msm_dsi_phy_type type, bool cphy_mode, int id) {
return ERR_PTR(-ENODEV);
}
static inline void msm_dsi_pll_destroy(struct msm_dsi_pll *pll)
@@ -177,7 +177,7 @@ void msm_dsi_host_get_phy_clk_req(struct mipi_dsi_host *host,
void msm_dsi_host_destroy(struct mipi_dsi_host *host);
int msm_dsi_host_modeset_init(struct mipi_dsi_host *host,
struct drm_device *dev);
-int msm_dsi_host_init(struct msm_dsi *msm_dsi);
+int msm_dsi_host_init(struct msm_dsi *msm_dsi, bool cphy_mode);
int msm_dsi_runtime_suspend(struct device *dev);
int msm_dsi_runtime_resume(struct device *dev);
int dsi_link_clk_set_rate_6g(struct msm_dsi_host *msm_host);
diff --git a/drivers/gpu/drm/msm/dsi/dsi.xml.h b/drivers/gpu/drm/msm/dsi/dsi.xml.h
index 50eb4d1b8fdd..5087a65d3e11 100644
--- a/drivers/gpu/drm/msm/dsi/dsi.xml.h
+++ b/drivers/gpu/drm/msm/dsi/dsi.xml.h
@@ -621,6 +621,8 @@ static inline uint32_t DSI_VERSION_MAJOR(uint32_t val)
return ((val) << DSI_VERSION_MAJOR__SHIFT) & DSI_VERSION_MAJOR__MASK;
}
+#define REG_DSI_CPHY_MODE_CTRL 0x000002d4
+
#define REG_DSI_PHY_PLL_CTRL_0 0x00000200
#define DSI_PHY_PLL_CTRL_0_ENABLE 0x00000001
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index ab281cba0f08..39346817a27a 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -168,6 +168,9 @@ struct msm_dsi_host {
int dlane_swap;
int num_data_lanes;
+ /* from phy DT */
+ bool cphy_mode;
+
u32 dma_cmd_ctrl_restore;
bool registered;
@@ -511,6 +514,7 @@ int msm_dsi_runtime_resume(struct device *dev)
int dsi_link_clk_set_rate_6g(struct msm_dsi_host *msm_host)
{
+ u32 byte_intf_rate;
int ret;
DBG("Set clk rates: pclk=%d, byteclk=%d",
@@ -530,8 +534,13 @@ int dsi_link_clk_set_rate_6g(struct msm_dsi_host *msm_host)
}
if (msm_host->byte_intf_clk) {
- ret = clk_set_rate(msm_host->byte_intf_clk,
- msm_host->byte_clk_rate / 2);
+ /* For CPHY, byte_intf_clk is same as byte_clk */
+ if (msm_host->cphy_mode)
+ byte_intf_rate = msm_host->byte_clk_rate;
+ else
+ byte_intf_rate = msm_host->byte_clk_rate / 2;
+
+ ret = clk_set_rate(msm_host->byte_intf_clk, byte_intf_rate);
if (ret) {
pr_err("%s: Failed to set rate byte intf clk, %d\n",
__func__, ret);
@@ -711,7 +720,11 @@ static void dsi_calc_pclk(struct msm_dsi_host *msm_host, bool is_dual_dsi)
lanes = 1;
}
- do_div(pclk_bpp, (8 * lanes));
+ /* CPHY "byte_clk" is in units of 16 bits */
+ if (msm_host->cphy_mode)
+ do_div(pclk_bpp, (16 * lanes));
+ else
+ do_div(pclk_bpp, (8 * lanes));
msm_host->pixel_clk_rate = pclk_rate;
msm_host->byte_clk_rate = pclk_bpp;
@@ -937,6 +950,9 @@ static void dsi_ctrl_config(struct msm_dsi_host *msm_host, bool enable,
data |= DSI_CTRL_ENABLE;
dsi_write(msm_host, REG_DSI_CTRL, data);
+
+ if (msm_host->cphy_mode)
+ dsi_write(msm_host, REG_DSI_CPHY_MODE_CTRL, BIT(0));
}
static void dsi_timing_setup(struct msm_dsi_host *msm_host, bool is_dual_dsi)
@@ -1818,7 +1834,7 @@ static int dsi_host_get_id(struct msm_dsi_host *msm_host)
return -EINVAL;
}
-int msm_dsi_host_init(struct msm_dsi *msm_dsi)
+int msm_dsi_host_init(struct msm_dsi *msm_dsi, bool cphy_mode)
{
struct msm_dsi_host *msm_host = NULL;
struct platform_device *pdev = msm_dsi->pdev;
@@ -1833,6 +1849,7 @@ int msm_dsi_host_init(struct msm_dsi *msm_dsi)
}
msm_host->pdev = pdev;
+ msm_host->cphy_mode = cphy_mode;
msm_dsi->host = &msm_host->base;
ret = dsi_host_parse_dt(msm_host);
@@ -2303,7 +2320,14 @@ void msm_dsi_host_get_phy_clk_req(struct mipi_dsi_host *host,
return;
}
- clk_req->bitclk_rate = msm_host->byte_clk_rate * 8;
+ /* CPHY transmits 16 bits over 7 clock cycles
+ * "byte_clk" is in units of 16-bits (see dsi_calc_pclk),
+ * so multiply by 7 to get the "bitclk rate"
+ */
+ if (msm_host->cphy_mode)
+ clk_req->bitclk_rate = msm_host->byte_clk_rate * 7;
+ else
+ clk_req->bitclk_rate = msm_host->byte_clk_rate * 8;
clk_req->escclk_rate = msm_host->esc_clk_rate;
}
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
index e8c1a727179c..c8b758ab259a 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
@@ -460,6 +460,51 @@ int msm_dsi_dphy_timing_calc_v4(struct msm_dsi_dphy_timing *timing,
return 0;
}
+int msm_dsi_cphy_timing_calc_v4(struct msm_dsi_dphy_timing *timing,
+ struct msm_dsi_phy_clk_request *clk_req)
+{
+ const unsigned long bit_rate = clk_req->bitclk_rate;
+ const unsigned long esc_rate = clk_req->escclk_rate;
+ s32 ui, ui_x7;
+ s32 tmax, tmin;
+ s32 coeff = 1000; /* Precision, should avoid overflow */
+ s32 temp;
+
+ if (!bit_rate || !esc_rate)
+ return -EINVAL;
+
+ ui = mult_frac(NSEC_PER_MSEC, coeff, bit_rate / 1000);
+ ui_x7 = ui * 7;
+
+ temp = S_DIV_ROUND_UP(38 * coeff, ui_x7);
+ tmin = max_t(s32, temp, 0);
+ temp = (95 * coeff) / ui_x7;
+ tmax = max_t(s32, temp, 0);
+ timing->clk_prepare = linear_inter(tmax, tmin, 50, 0, false);
+
+ tmin = DIV_ROUND_UP(50 * coeff, ui_x7);
+ tmax = 255;
+ timing->hs_rqst = linear_inter(tmax, tmin, 1, 0, false);
+
+ tmin = DIV_ROUND_UP(100 * coeff, ui_x7) - 1;
+ tmax = 255;
+ timing->hs_exit = linear_inter(tmax, tmin, 10, 0, false);
+
+ tmin = 1;
+ tmax = 32;
+ timing->shared_timings.clk_post = linear_inter(tmax, tmin, 80, 0, false);
+
+ tmin = min_t(s32, 64, S_DIV_ROUND_UP(262 * coeff, ui_x7) - 1);
+ tmax = 64;
+ timing->shared_timings.clk_pre = linear_inter(tmax, tmin, 20, 0, false);
+
+ DBG("%d, %d, %d, %d, %d",
+ timing->shared_timings.clk_pre, timing->shared_timings.clk_post,
+ timing->clk_prepare, timing->hs_exit, timing->hs_rqst);
+
+ return 0;
+}
+
void msm_dsi_phy_set_src_pll(struct msm_dsi_phy *phy, int pll_id, u32 reg,
u32 bit_mask)
{
@@ -683,6 +728,8 @@ static int dsi_phy_driver_probe(struct platform_device *pdev)
phy->regulator_ldo_mode = of_property_read_bool(dev->of_node,
"qcom,dsi-phy-regulator-ldo-mode");
+ phy->cphy_mode = of_property_read_bool(dev->of_node,
+ "qcom,dsi-phy-cphy-mode");
phy->base = msm_ioremap(pdev, "dsi_phy", "DSI_PHY");
if (IS_ERR(phy->base)) {
@@ -715,7 +762,7 @@ static int dsi_phy_driver_probe(struct platform_device *pdev)
if (ret)
goto fail;
- phy->pll = msm_dsi_pll_init(pdev, phy->cfg->type, phy->id);
+ phy->pll = msm_dsi_pll_init(pdev, phy->cfg->type, phy->cphy_mode, phy->id);
if (IS_ERR_OR_NULL(phy->pll)) {
DRM_DEV_INFO(dev,
"%s: pll init failed: %ld, need separate pll clk driver\n",
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h
index d2bd74b6f357..699d3d4a8ba8 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h
@@ -89,6 +89,7 @@ struct msm_dsi_phy {
enum msm_dsi_phy_usecase usecase;
bool regulator_ldo_mode;
+ bool cphy_mode;
struct msm_dsi_pll *pll;
};
@@ -104,6 +105,8 @@ int msm_dsi_dphy_timing_calc_v3(struct msm_dsi_dphy_timing *timing,
struct msm_dsi_phy_clk_request *clk_req);
int msm_dsi_dphy_timing_calc_v4(struct msm_dsi_dphy_timing *timing,
struct msm_dsi_phy_clk_request *clk_req);
+int msm_dsi_cphy_timing_calc_v4(struct msm_dsi_dphy_timing *timing,
+ struct msm_dsi_phy_clk_request *clk_req);
void msm_dsi_phy_set_src_pll(struct msm_dsi_phy *phy, int pll_id, u32 reg,
u32 bit_mask);
int msm_dsi_phy_init_common(struct msm_dsi_phy *phy);
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c
index 79c034ae075d..69291babd871 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c
@@ -79,15 +79,21 @@ static int dsi_7nm_phy_enable(struct msm_dsi_phy *phy, int src_pll_id,
struct msm_dsi_dphy_timing *timing = &phy->timing;
void __iomem *base = phy->base;
bool less_than_1500_mhz;
- u32 vreg_ctrl_0, glbl_str_swi_cal_sel_ctrl, glbl_hstx_str_ctrl_0;
+ u32 vreg_ctrl_0, vreg_ctrl_1, lane_ctrl0;
+ u32 glbl_pemph_ctrl_0;
+ u32 glbl_str_swi_cal_sel_ctrl, glbl_hstx_str_ctrl_0;
u32 glbl_rescode_top_ctrl, glbl_rescode_bot_ctrl;
u32 data;
DBG("");
- if (msm_dsi_dphy_timing_calc_v4(timing, clk_req)) {
+ if (phy->cphy_mode)
+ ret = msm_dsi_cphy_timing_calc_v4(timing, clk_req);
+ else
+ ret = msm_dsi_dphy_timing_calc_v4(timing, clk_req);
+ if (ret) {
DRM_DEV_ERROR(&phy->pdev->dev,
- "%s: D-PHY timing calculation failed\n", __func__);
+ "%s: PHY timing calculation failed\n", __func__);
return -EINVAL;
}
@@ -108,6 +114,10 @@ static int dsi_7nm_phy_enable(struct msm_dsi_phy *phy, int src_pll_id,
/* Alter PHY configurations if data rate less than 1.5GHZ*/
less_than_1500_mhz = (clk_req->bitclk_rate <= 1500000000);
+ /* For C-PHY, no low power settings for lower clk rate */
+ if (phy->cphy_mode)
+ less_than_1500_mhz = false;
+
if (phy->cfg->type == MSM_DSI_PHY_7NM_V4_1) {
vreg_ctrl_0 = less_than_1500_mhz ? 0x53 : 0x52;
glbl_rescode_top_ctrl = less_than_1500_mhz ? 0x3d : 0x00;
@@ -122,6 +132,17 @@ static int dsi_7nm_phy_enable(struct msm_dsi_phy *phy, int src_pll_id,
glbl_rescode_bot_ctrl = 0x3c;
}
+ if (phy->cphy_mode) {
+ vreg_ctrl_0 = 0x51;
+ vreg_ctrl_1 = 0x55;
+ glbl_pemph_ctrl_0 = 0x11;
+ lane_ctrl0 = 0x17;
+ } else {
+ vreg_ctrl_1 = 0x5c;
+ glbl_pemph_ctrl_0 = 0x00;
+ lane_ctrl0 = 0x1f;
+ }
+
/* de-assert digital and pll power down */
data = BIT(6) | BIT(5);
dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_CTRL_0, data);
@@ -142,15 +163,22 @@ static int dsi_7nm_phy_enable(struct msm_dsi_phy *phy, int src_pll_id,
dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_LANE_CFG0, 0x21);
dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_LANE_CFG1, 0x84);
+ if (phy->cphy_mode)
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_GLBL_CTRL, BIT(6));
+
/* Enable LDO */
dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_VREG_CTRL_0, vreg_ctrl_0);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_VREG_CTRL_1, 0x5c);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_VREG_CTRL_1, vreg_ctrl_1);
+
dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_CTRL_3, 0x00);
dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_GLBL_STR_SWI_CAL_SEL_CTRL,
glbl_str_swi_cal_sel_ctrl);
dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_GLBL_HSTX_STR_CTRL_0,
glbl_hstx_str_ctrl_0);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_GLBL_PEMPH_CTRL_0, 0x00);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_GLBL_PEMPH_CTRL_0,
+ glbl_pemph_ctrl_0);
+ if (phy->cphy_mode)
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_GLBL_PEMPH_CTRL_1, 0x01);
dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_GLBL_RESCODE_OFFSET_TOP_CTRL,
glbl_rescode_top_ctrl);
dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_GLBL_RESCODE_OFFSET_BOT_CTRL,
@@ -160,10 +188,11 @@ static int dsi_7nm_phy_enable(struct msm_dsi_phy *phy, int src_pll_id,
/* Remove power down from all blocks */
dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_CTRL_0, 0x7f);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_LANE_CTRL0, 0x1f);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_LANE_CTRL0, lane_ctrl0);
/* Select full-rate mode */
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_CTRL_2, 0x40);
+ if (!phy->cphy_mode)
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_CTRL_2, 0x40);
ret = msm_dsi_pll_set_usecase(phy->pll, phy->usecase);
if (ret) {
@@ -173,22 +202,36 @@ static int dsi_7nm_phy_enable(struct msm_dsi_phy *phy, int src_pll_id,
}
/* DSI PHY timings */
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_0, 0x00);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_1, timing->clk_zero);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_2, timing->clk_prepare);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_3, timing->clk_trail);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_4, timing->hs_exit);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_5, timing->hs_zero);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_6, timing->hs_prepare);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_7, timing->hs_trail);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_8, timing->hs_rqst);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_9, 0x02);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_10, 0x04);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_11, 0x00);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_12,
- timing->shared_timings.clk_pre);
- dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_13,
- timing->shared_timings.clk_post);
+ if (phy->cphy_mode) {
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_0, 0x00);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_4, timing->hs_exit);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_5,
+ timing->shared_timings.clk_pre);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_6, timing->clk_prepare);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_7,
+ timing->shared_timings.clk_post);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_8, timing->hs_rqst);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_9, 0x02);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_10, 0x04);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_11, 0x00);
+ } else {
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_0, 0x00);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_1, timing->clk_zero);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_2, timing->clk_prepare);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_3, timing->clk_trail);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_4, timing->hs_exit);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_5, timing->hs_zero);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_6, timing->hs_prepare);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_7, timing->hs_trail);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_8, timing->hs_rqst);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_9, 0x02);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_10, 0x04);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_11, 0x00);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_12,
+ timing->shared_timings.clk_pre);
+ dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_TIMING_CTRL_13,
+ timing->shared_timings.clk_post);
+ }
/* DSI lane settings */
dsi_phy_hw_v4_0_lane_settings(phy);
diff --git a/drivers/gpu/drm/msm/dsi/pll/dsi_pll.c b/drivers/gpu/drm/msm/dsi/pll/dsi_pll.c
index a45fe95aff49..9ad9a8774982 100644
--- a/drivers/gpu/drm/msm/dsi/pll/dsi_pll.c
+++ b/drivers/gpu/drm/msm/dsi/pll/dsi_pll.c
@@ -142,7 +142,7 @@ int msm_dsi_pll_set_usecase(struct msm_dsi_pll *pll,
}
struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev,
- enum msm_dsi_phy_type type, int id)
+ enum msm_dsi_phy_type type, bool cphy_mode, int id)
{
struct device *dev = &pdev->dev;
struct msm_dsi_pll *pll;
@@ -163,7 +163,7 @@ struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev,
break;
case MSM_DSI_PHY_7NM:
case MSM_DSI_PHY_7NM_V4_1:
- pll = msm_dsi_pll_7nm_init(pdev, id);
+ pll = msm_dsi_pll_7nm_init(pdev, cphy_mode, id);
break;
default:
pll = ERR_PTR(-ENXIO);
diff --git a/drivers/gpu/drm/msm/dsi/pll/dsi_pll.h b/drivers/gpu/drm/msm/dsi/pll/dsi_pll.h
index 3405982a092c..d8d3e5b09053 100644
--- a/drivers/gpu/drm/msm/dsi/pll/dsi_pll.h
+++ b/drivers/gpu/drm/msm/dsi/pll/dsi_pll.h
@@ -117,10 +117,11 @@ msm_dsi_pll_10nm_init(struct platform_device *pdev, int id)
}
#endif
#ifdef CONFIG_DRM_MSM_DSI_7NM_PHY
-struct msm_dsi_pll *msm_dsi_pll_7nm_init(struct platform_device *pdev, int id);
+struct msm_dsi_pll *
+msm_dsi_pll_7nm_init(struct platform_device *pdev, bool cphy_mode, int id);
#else
static inline struct msm_dsi_pll *
-msm_dsi_pll_7nm_init(struct platform_device *pdev, int id)
+msm_dsi_pll_7nm_init(struct platform_device *pdev, bool cphy_mode, int id)
{
return ERR_PTR(-ENODEV);
}
diff --git a/drivers/gpu/drm/msm/dsi/pll/dsi_pll_7nm.c b/drivers/gpu/drm/msm/dsi/pll/dsi_pll_7nm.c
index 93bf142e4a4e..edc1fb491bc7 100644
--- a/drivers/gpu/drm/msm/dsi/pll/dsi_pll_7nm.c
+++ b/drivers/gpu/drm/msm/dsi/pll/dsi_pll_7nm.c
@@ -86,6 +86,7 @@ struct pll_7nm_cached_state {
struct dsi_pll_7nm {
struct msm_dsi_pll base;
+ bool cphy_mode;
int id;
struct platform_device *pdev;
@@ -327,7 +328,7 @@ static void dsi_pll_commit(struct dsi_pll_7nm *pll)
pll_write(base + REG_DSI_7nm_PHY_PLL_FRAC_DIV_START_HIGH_1, reg->frac_div_start_high);
pll_write(base + REG_DSI_7nm_PHY_PLL_PLL_LOCKDET_RATE_1, 0x40);
pll_write(base + REG_DSI_7nm_PHY_PLL_PLL_LOCK_DELAY, 0x06);
- pll_write(base + REG_DSI_7nm_PHY_PLL_CMODE_1, 0x10); /* TODO: 0x00 for CPHY */
+ pll_write(base + REG_DSI_7nm_PHY_PLL_CMODE_1, pll->cphy_mode ? 0x00 : 0x10);
pll_write(base + REG_DSI_7nm_PHY_PLL_CLOCK_INVERTERS, reg->pll_clock_inverters);
}
@@ -668,7 +669,8 @@ static void dsi_pll_7nm_destroy(struct msm_dsi_pll *pll)
of_clk_del_provider(dev->of_node);
clk_hw_unregister_divider(pll_7nm->out_dsiclk_hw);
- clk_hw_unregister_mux(pll_7nm->pclk_mux_hw);
+ if (pll_7nm->pclk_mux_hw)
+ clk_hw_unregister_mux(pll_7nm->pclk_mux_hw);
clk_hw_unregister_fixed_factor(pll_7nm->post_out_div_clk_hw);
clk_hw_unregister_fixed_factor(pll_7nm->by_2_bit_clk_hw);
clk_hw_unregister_fixed_factor(pll_7nm->byte_clk_hw);
@@ -751,7 +753,8 @@ static int pll_7nm_register(struct dsi_pll_7nm *pll_7nm)
/* DSI Byte clock = VCO_CLK / OUT_DIV / BIT_DIV / 8 */
hw = clk_hw_register_fixed_factor(dev, clk_name, parent,
- CLK_SET_RATE_PARENT, 1, 8);
+ CLK_SET_RATE_PARENT, 1,
+ pll_7nm->cphy_mode ? 7 : 8);
if (IS_ERR(hw)) {
ret = PTR_ERR(hw);
goto err_bit_clk_hw;
@@ -775,8 +778,10 @@ static int pll_7nm_register(struct dsi_pll_7nm *pll_7nm)
snprintf(clk_name, 32, "dsi%d_pll_post_out_div_clk", pll_7nm->id);
snprintf(parent, 32, "dsi%d_pll_out_div_clk", pll_7nm->id);
- hw = clk_hw_register_fixed_factor(dev, clk_name, parent,
- 0, 1, 4);
+ if (pll_7nm->cphy_mode)
+ hw = clk_hw_register_fixed_factor(dev, clk_name, parent, 0, 2, 7);
+ else
+ hw = clk_hw_register_fixed_factor(dev, clk_name, parent, 0, 1, 4);
if (IS_ERR(hw)) {
ret = PTR_ERR(hw);
goto err_by_2_bit_clk_hw;
@@ -784,27 +789,40 @@ static int pll_7nm_register(struct dsi_pll_7nm *pll_7nm)
pll_7nm->post_out_div_clk_hw = hw;
- snprintf(clk_name, 32, "dsi%d_pclk_mux", pll_7nm->id);
- snprintf(parent, 32, "dsi%d_pll_bit_clk", pll_7nm->id);
- snprintf(parent2, 32, "dsi%d_pll_by_2_bit_clk", pll_7nm->id);
- snprintf(parent3, 32, "dsi%d_pll_out_div_clk", pll_7nm->id);
- snprintf(parent4, 32, "dsi%d_pll_post_out_div_clk", pll_7nm->id);
-
- hw = clk_hw_register_mux(dev, clk_name,
- ((const char *[]){
- parent, parent2, parent3, parent4
- }), 4, 0, pll_7nm->phy_cmn_mmio +
- REG_DSI_7nm_PHY_CMN_CLK_CFG1,
- 0, 2, 0, NULL);
- if (IS_ERR(hw)) {
- ret = PTR_ERR(hw);
- goto err_post_out_div_clk_hw;
+ /* in CPHY mode, pclk_mux will always have post_out_div as parent
+ * don't register a pclk_mux clock and just use post_out_div instead
+ */
+ if (pll_7nm->cphy_mode) {
+ void __iomem *base = pll_7nm->phy_cmn_mmio;
+ u32 data;
+
+ data = pll_read(base + REG_DSI_7nm_PHY_CMN_CLK_CFG1);
+ pll_write(base + REG_DSI_7nm_PHY_CMN_CLK_CFG1, data | 3);
+
+ snprintf(parent, 32, "dsi%d_pll_post_out_div_clk", pll_7nm->id);
+ } else {
+ snprintf(clk_name, 32, "dsi%d_pclk_mux", pll_7nm->id);
+ snprintf(parent, 32, "dsi%d_pll_bit_clk", pll_7nm->id);
+ snprintf(parent2, 32, "dsi%d_pll_by_2_bit_clk", pll_7nm->id);
+ snprintf(parent3, 32, "dsi%d_pll_out_div_clk", pll_7nm->id);
+ snprintf(parent4, 32, "dsi%d_pll_post_out_div_clk", pll_7nm->id);
+
+ hw = clk_hw_register_mux(dev, clk_name,
+ ((const char *[]){
+ parent, parent2, parent3, parent4
+ }), 4, 0, pll_7nm->phy_cmn_mmio +
+ REG_DSI_7nm_PHY_CMN_CLK_CFG1,
+ 0, 2, 0, NULL);
+ if (IS_ERR(hw)) {
+ ret = PTR_ERR(hw);
+ goto err_post_out_div_clk_hw;
+ }
+
+ pll_7nm->pclk_mux_hw = hw;
+ snprintf(parent, 32, "dsi%d_pclk_mux", pll_7nm->id);
}
- pll_7nm->pclk_mux_hw = hw;
-
snprintf(clk_name, 32, "dsi%d_phy_pll_out_dsiclk", pll_7nm->id);
- snprintf(parent, 32, "dsi%d_pclk_mux", pll_7nm->id);
/* PIX CLK DIV : DIV_CTRL_7_4*/
hw = clk_hw_register_divider(dev, clk_name, parent,
@@ -835,7 +853,8 @@ static int pll_7nm_register(struct dsi_pll_7nm *pll_7nm)
err_dsiclk_hw:
clk_hw_unregister_divider(pll_7nm->out_dsiclk_hw);
err_pclk_mux_hw:
- clk_hw_unregister_mux(pll_7nm->pclk_mux_hw);
+ if (pll_7nm->pclk_mux_hw)
+ clk_hw_unregister_mux(pll_7nm->pclk_mux_hw);
err_post_out_div_clk_hw:
clk_hw_unregister_fixed_factor(pll_7nm->post_out_div_clk_hw);
err_by_2_bit_clk_hw:
@@ -852,7 +871,8 @@ static int pll_7nm_register(struct dsi_pll_7nm *pll_7nm)
return ret;
}
-struct msm_dsi_pll *msm_dsi_pll_7nm_init(struct platform_device *pdev, int id)
+struct msm_dsi_pll *
+msm_dsi_pll_7nm_init(struct platform_device *pdev, bool cphy_mode, int id)
{
struct dsi_pll_7nm *pll_7nm;
struct msm_dsi_pll *pll;
@@ -865,6 +885,7 @@ struct msm_dsi_pll *msm_dsi_pll_7nm_init(struct platform_device *pdev, int id)
DBG("DSI PLL%d", id);
pll_7nm->pdev = pdev;
+ pll_7nm->cphy_mode = cphy_mode;
pll_7nm->id = id;
pll_7nm_list[id] = pll_7nm;
--
2.26.1
More information about the dri-devel
mailing list