[PATCH V3 0/6] Add Display support for AM43xx

[PATCH V3 0/6] Add Display support for AM43xx

[Sathya Prakash M R]

This patch series adds DSS support to the AM43x. The DPI LCD
panel is supported on both am43x-epos-evm and am437x-gp-evm.
The LCD panel is from OSD model: OSD057T0559-34TS

Version 1 of this series can be found below[1]:
[1]: https://patchwork.kernel.org/patch/3274421/

Tested on am43x-epos-evm and am437x-gp-evm.

Dependent patches :
Sourav patches adding device nodes for epos [2] and gp [3] evm
[2]: https://patchwork.kernel.org/patch/3246701/
[3]: https://patchwork.kernel.org/patch/3246751/

AM43xx has a dedicated display pll. Hence tomi patch improving
func clock handling is needed [4]
[4]: https://patchwork.kernel.org/patch/3196221/

Tomi patch adding DT support to DSS [5]
[5]: https://patchwork.kernel.org/patch/3516341/

Changes from V2:
fixed minor comments on dt changes and added missing signoff

Sathya Prakash M R (5):
  OMAPDSS: Add DSS features for AM43xx
  ARM: OMAP2+: AM43xx DSS Hwmod
  ARM: am43xx-clocks.dtsi: Set parent for disp_clk
  ARM: am4372.dtsi: add omapdss information
  ARM: DTS: AM43xx: Add DSS nodes

Tomi Valkeinen (1):
  ARM: AM43xx: fix dpll init in bypass mode

 arch/arm/boot/dts/am4372.dtsi              |   35 ++++++++++
 arch/arm/boot/dts/am437x-gp-evm.dts        |   77 ++++++++++++++++++++
 arch/arm/boot/dts/am43x-epos-evm.dts       |   73 +++++++++++++++++++
 arch/arm/boot/dts/am43xx-clocks.dtsi       |    2 +
 arch/arm/mach-omap2/clkt_dpll.c            |    4 +-
 arch/arm/mach-omap2/display.c              |    2 +
 arch/arm/mach-omap2/omap_hwmod_43xx_data.c |  104 ++++++++++++++++++++++++++++
 arch/arm/mach-omap2/prcm43xx.h             |    1 +
 drivers/video/omap2/dss/dispc.c            |    1 +
 drivers/video/omap2/dss/dpi.c              |    2 +
 drivers/video/omap2/dss/dsi.c              |    1 +
 drivers/video/omap2/dss/dss.c              |   11 +++
 drivers/video/omap2/dss/dss_features.c     |   67 ++++++++++++++++++
 include/video/omapdss.h                    |    1 +
 14 files changed, 379 insertions(+), 2 deletions(-)

-- 
1.7.9.5

[PATCH V3 1/6] OMAPDSS: Add DSS features for AM43xx

[Sathya Prakash M R]

Add DSS features for AM43xx.

Signed-off-by: Sathya Prakash M R <sathyap@ti.com>
---
 arch/arm/mach-omap2/display.c          |    2 +
 drivers/video/omap2/dss/dispc.c        |    1 +
 drivers/video/omap2/dss/dpi.c          |    2 +
 drivers/video/omap2/dss/dsi.c          |    1 +
 drivers/video/omap2/dss/dss.c          |   11 ++++++
 drivers/video/omap2/dss/dss_features.c |   67 ++++++++++++++++++++++++++++++++
 include/video/omapdss.h                |    1 +
 7 files changed, 85 insertions(+)

diff --git a/arch/arm/mach-omap2/display.c b/arch/arm/mach-omap2/display.c
index a4e536b..d1cac1c 100644
--- a/arch/arm/mach-omap2/display.c
+++ b/arch/arm/mach-omap2/display.c
@@ -316,6 +316,8 @@ static enum omapdss_version __init omap_display_get_version(void)
 		return OMAPDSS_VER_OMAP4;
 	else if (soc_is_omap54xx())
 		return OMAPDSS_VER_OMAP5;
+	else if (soc_is_am43xx())
+		return OMAPDSS_VER_AM43xx;
 	else
 		return OMAPDSS_VER_UNKNOWN;
 }
diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c
index 4ec59ca..1b4aed5 100644
--- a/drivers/video/omap2/dss/dispc.c
+++ b/drivers/video/omap2/dss/dispc.c
@@ -3622,6 +3622,7 @@ static int __init dispc_init_features(struct platform_device *pdev)
 	case OMAPDSS_VER_OMAP34xx_ES3:
 	case OMAPDSS_VER_OMAP3630:
 	case OMAPDSS_VER_AM35xx:
+	case OMAPDSS_VER_AM43xx:
 		src = &omap34xx_rev3_0_dispc_feats;
 		break;
 
diff --git a/drivers/video/omap2/dss/dpi.c b/drivers/video/omap2/dss/dpi.c
index bd48cde..7ee7f86 100644
--- a/drivers/video/omap2/dss/dpi.c
+++ b/drivers/video/omap2/dss/dpi.c
@@ -64,6 +64,7 @@ static struct platform_device *dpi_get_dsidev(enum omap_channel channel)
 	case OMAPDSS_VER_OMAP34xx_ES3:
 	case OMAPDSS_VER_OMAP3630:
 	case OMAPDSS_VER_AM35xx:
+	case OMAPDSS_VER_AM43xx:
 		return NULL;
 
 	case OMAPDSS_VER_OMAP4430_ES1:
@@ -593,6 +594,7 @@ static enum omap_channel dpi_get_channel(void)
 	case OMAPDSS_VER_OMAP34xx_ES3:
 	case OMAPDSS_VER_OMAP3630:
 	case OMAPDSS_VER_AM35xx:
+	case OMAPDSS_VER_AM43xx:
 		return OMAP_DSS_CHANNEL_LCD;
 
 	case OMAPDSS_VER_OMAP4430_ES1:
diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c
index 6056b27..d68b49b 100644
--- a/drivers/video/omap2/dss/dsi.c
+++ b/drivers/video/omap2/dss/dsi.c
@@ -5082,6 +5082,7 @@ static enum omap_channel dsi_get_channel(int module_id)
 {
 	switch (omapdss_get_version()) {
 	case OMAPDSS_VER_OMAP24xx:
+	case OMAPDSS_VER_AM43xx:
 		DSSWARN("DSI not supported\n");
 		return OMAP_DSS_CHANNEL_LCD;
 
diff --git a/drivers/video/omap2/dss/dss.c b/drivers/video/omap2/dss/dss.c
index bd01608..0b60746 100644
--- a/drivers/video/omap2/dss/dss.c
+++ b/drivers/video/omap2/dss/dss.c
@@ -795,6 +795,13 @@ static const struct dss_features omap54xx_dss_feats __initconst = {
 	.dpi_select_source	=	&dss_dpi_select_source_omap5,
 };
 
+static const struct dss_features am43xx_dss_feats __initconst = {
+	.fck_div_max		=	0,
+	.dss_fck_multiplier	=	0,
+	.parent_clk_name	=	NULL,
+	.dpi_select_source	=	&dss_dpi_select_source_omap2_omap3,
+};
+
 static int __init dss_init_features(struct platform_device *pdev)
 {
 	const struct dss_features *src;
@@ -831,6 +838,10 @@ static int __init dss_init_features(struct platform_device *pdev)
 		src = &omap54xx_dss_feats;
 		break;
 
+	case OMAPDSS_VER_AM43xx:
+		src = &am43xx_dss_feats;
+		break;
+
 	default:
 		return -ENODEV;
 	}
diff --git a/drivers/video/omap2/dss/dss_features.c b/drivers/video/omap2/dss/dss_features.c
index f8fd6db..79df1a2 100644
--- a/drivers/video/omap2/dss/dss_features.c
+++ b/drivers/video/omap2/dss/dss_features.c
@@ -93,6 +93,17 @@ static const struct dss_reg_field omap3_dss_reg_fields[] = {
 	[FEAT_REG_DSIPLL_REGM_DSI]		= { 26, 23 },
 };
 
+static const struct dss_reg_field am43xx_dss_reg_fields[] = {
+	[FEAT_REG_FIRHINC]			= { 12, 0 },
+	[FEAT_REG_FIRVINC]			= { 28, 16 },
+	[FEAT_REG_FIFOLOWTHRESHOLD]	= { 11, 0 },
+	[FEAT_REG_FIFOHIGHTHRESHOLD]		= { 27, 16 },
+	[FEAT_REG_FIFOSIZE]		= { 10, 0 },
+	[FEAT_REG_HORIZONTALACCU]		= { 9, 0 },
+	[FEAT_REG_VERTICALACCU]			= { 25, 16 },
+	[FEAT_REG_DISPC_CLK_SWITCH]		= { 0, 0 },
+};
+
 static const struct dss_reg_field omap4_dss_reg_fields[] = {
 	[FEAT_REG_FIRHINC]			= { 12, 0 },
 	[FEAT_REG_FIRVINC]			= { 28, 16 },
@@ -149,6 +160,11 @@ static const enum omap_display_type omap3630_dss_supported_displays[] = {
 	OMAP_DISPLAY_TYPE_VENC,
 };
 
+static const enum omap_display_type am43xx_dss_supported_displays[] = {
+	/* OMAP_DSS_CHANNEL_LCD */
+	OMAP_DISPLAY_TYPE_DPI | OMAP_DISPLAY_TYPE_DBI,
+};
+
 static const enum omap_display_type omap4_dss_supported_displays[] = {
 	/* OMAP_DSS_CHANNEL_LCD */
 	OMAP_DISPLAY_TYPE_DBI | OMAP_DISPLAY_TYPE_DSI,
@@ -200,6 +216,11 @@ static const enum omap_dss_output_id omap3630_dss_supported_outputs[] = {
 	OMAP_DSS_OUTPUT_VENC,
 };
 
+static const enum omap_dss_output_id am43xx_dss_supported_outputs[] = {
+	/* OMAP_DSS_CHANNEL_LCD */
+	OMAP_DSS_OUTPUT_DPI | OMAP_DSS_OUTPUT_DBI,
+};
+
 static const enum omap_dss_output_id omap4_dss_supported_outputs[] = {
 	/* OMAP_DSS_CHANNEL_LCD */
 	OMAP_DSS_OUTPUT_DBI | OMAP_DSS_OUTPUT_DSI1,
@@ -444,6 +465,13 @@ static const struct dss_param_range omap3_dss_param_range[] = {
 	[FEAT_PARAM_LINEWIDTH]			= { 1, 1024 },
 };
 
+static const struct dss_param_range am43xx_dss_param_range[] = {
+	[FEAT_PARAM_DSS_FCK]			= { 0, 200000000 },
+	[FEAT_PARAM_DSS_PCD]			= { 2, 255 },
+	[FEAT_PARAM_DOWNSCALE]			= { 1, 4 },
+	[FEAT_PARAM_LINEWIDTH]			= { 1, 1024 },
+};
+
 static const struct dss_param_range omap4_dss_param_range[] = {
 	[FEAT_PARAM_DSS_FCK]			= { 0, 186000000 },
 	[FEAT_PARAM_DSS_PCD]			= { 1, 255 },
@@ -520,6 +548,21 @@ static const enum dss_feat_id am35xx_dss_feat_list[] = {
 	FEAT_OMAP3_DSI_FIFO_BUG,
 };
 
+static const enum dss_feat_id am43xx_dss_feat_list[] = {
+	FEAT_LCDENABLEPOL,
+	FEAT_LCDENABLESIGNAL,
+	FEAT_PCKFREEENABLE,
+	FEAT_FUNCGATED,
+	FEAT_LINEBUFFERSPLIT,
+	FEAT_ROWREPEATENABLE,
+	FEAT_RESIZECONF,
+	FEAT_CPR,
+	FEAT_PRELOAD,
+	FEAT_FIR_COEF_V,
+	FEAT_ALPHA_FIXED_ZORDER,
+	FEAT_FIFO_MERGE,
+};
+
 static const enum dss_feat_id omap3630_dss_feat_list[] = {
 	FEAT_LCDENABLEPOL,
 	FEAT_LCDENABLESIGNAL,
@@ -681,6 +724,26 @@ static const struct omap_dss_features am35xx_dss_features = {
 	.burst_size_unit = 8,
 };
 
+static const struct omap_dss_features am43xx_dss_features = {
+	.reg_fields = am43xx_dss_reg_fields,
+	.num_reg_fields = ARRAY_SIZE(am43xx_dss_reg_fields),
+
+	.features = am43xx_dss_feat_list,
+	.num_features = ARRAY_SIZE(am43xx_dss_feat_list),
+
+	.num_mgrs = 1,
+	.num_ovls = 3,
+	.supported_displays = am43xx_dss_supported_displays,
+	.supported_outputs = am43xx_dss_supported_outputs,
+	.supported_color_modes = omap3_dss_supported_color_modes,
+	.overlay_caps = omap3430_dss_overlay_caps,
+	.clksrc_names = omap2_dss_clk_source_names,
+	.dss_params = am43xx_dss_param_range,
+	.supported_rotation_types = OMAP_DSS_ROT_DMA,
+	.buffer_size_unit = 1,
+	.burst_size_unit = 8,
+};
+
 static const struct omap_dss_features omap3630_dss_features = {
 	.reg_fields = omap3_dss_reg_fields,
 	.num_reg_fields = ARRAY_SIZE(omap3_dss_reg_fields),
@@ -927,6 +990,10 @@ void dss_features_init(enum omapdss_version version)
 		omap_current_dss_features = &am35xx_dss_features;
 		break;
 
+	case OMAPDSS_VER_AM43xx:
+		omap_current_dss_features = &am43xx_dss_features;
+		break;
+
 	default:
 		DSSWARN("Unsupported OMAP version");
 		break;
diff --git a/include/video/omapdss.h b/include/video/omapdss.h
index 3d7c51a..7513146 100644
--- a/include/video/omapdss.h
+++ b/include/video/omapdss.h
@@ -319,6 +319,7 @@ enum omapdss_version {
 	OMAPDSS_VER_OMAP4430_ES2,	/* OMAP4430 ES2.0, 2.1, 2.2 */
 	OMAPDSS_VER_OMAP4,		/* All other OMAP4s */
 	OMAPDSS_VER_OMAP5,
+	OMAPDSS_VER_AM43xx,
 };
 
 /* Board specific data */
-- 
1.7.9.5

[PATCH V3 2/6] ARM: AM43xx: fix dpll init in bypass mode

[Sathya Prakash M R]

From: Tomi Valkeinen <tomi.valkeinen@ti.com>

On AM43xx, if a PLL is in bypass at kernel init, the code in
omap2_get_dpll_rate() will not realize this and will try to calculate
the clock rate using the multiplier and the divider, resulting in
errors.

omap2_init_dpll_parent() has similar issue.

Add the missing soc_is_am43xx() check to make the code work on AM43xx.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Sathya Prakash M R <sathyap@ti.com>
---
 arch/arm/mach-omap2/clkt_dpll.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-omap2/clkt_dpll.c b/arch/arm/mach-omap2/clkt_dpll.c
index 924c230..14e9e45 100644
--- a/arch/arm/mach-omap2/clkt_dpll.c
+++ b/arch/arm/mach-omap2/clkt_dpll.c
@@ -209,7 +209,7 @@ u8 omap2_init_dpll_parent(struct clk_hw *hw)
 		if (v == OMAP3XXX_EN_DPLL_LPBYPASS ||
 		    v == OMAP3XXX_EN_DPLL_FRBYPASS)
 			return 1;
-	} else if (soc_is_am33xx() || cpu_is_omap44xx()) {
+	} else if (soc_is_am33xx() || cpu_is_omap44xx() || soc_is_am43xx()) {
 		if (v == OMAP4XXX_EN_DPLL_LPBYPASS ||
 		    v == OMAP4XXX_EN_DPLL_FRBYPASS ||
 		    v == OMAP4XXX_EN_DPLL_MNBYPASS)
@@ -255,7 +255,7 @@ unsigned long omap2_get_dpll_rate(struct clk_hw_omap *clk)
 		if (v == OMAP3XXX_EN_DPLL_LPBYPASS ||
 		    v == OMAP3XXX_EN_DPLL_FRBYPASS)
 			return __clk_get_rate(dd->clk_bypass);
-	} else if (soc_is_am33xx() || cpu_is_omap44xx()) {
+	} else if (soc_is_am33xx() || cpu_is_omap44xx() || soc_is_am43xx()) {
 		if (v == OMAP4XXX_EN_DPLL_LPBYPASS ||
 		    v == OMAP4XXX_EN_DPLL_FRBYPASS ||
 		    v == OMAP4XXX_EN_DPLL_MNBYPASS)
-- 
1.7.9.5

[PATCH V3 3/6] ARM: OMAP2+: AM43xx DSS Hwmod

[Sathya Prakash M R]

Add DSS hwmod structs for AM43xx.

Signed-off-by: Sathya Prakash M R <sathyap@ti.com>
---
 arch/arm/mach-omap2/omap_hwmod_43xx_data.c |  104 ++++++++++++++++++++++++++++
 arch/arm/mach-omap2/prcm43xx.h             |    1 +
 2 files changed, 105 insertions(+)

diff --git a/arch/arm/mach-omap2/omap_hwmod_43xx_data.c b/arch/arm/mach-omap2/omap_hwmod_43xx_data.c
index 9002fca..6a121db 100644
--- a/arch/arm/mach-omap2/omap_hwmod_43xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_43xx_data.c
@@ -19,6 +19,8 @@
 #include "omap_hwmod.h"
 #include "omap_hwmod_33xx_43xx_common_data.h"
 #include "prcm43xx.h"
+#include "omap_hwmod_common_data.h"
+
 
 /* IP blocks */
 static struct omap_hwmod am43xx_l4_hs_hwmod = {
@@ -415,6 +417,76 @@ static struct omap_hwmod am43xx_qspi_hwmod = {
 	},
 };
 
+/* Display sub system - DSS */
+
+static struct omap_hwmod_dma_info am43xx_dss_sdma_chs[] = {
+	{ .name = "dispc", .dma_req = 5 },
+	{ .dma_req = -1 },
+};
+
+struct omap_dss_dispc_dev_attr am43xx_dss_dispc_dev_attr = {
+	.manager_count		= 1,
+	.has_framedonetv_irq	= 0
+};
+
+
+static struct omap_hwmod_class_sysconfig am43xx_dispc_sysc = {
+	.rev_offs	= 0x0000,
+	.sysc_offs	= 0x0010,
+	.syss_offs	= 0x0014,
+	.sysc_flags	= (SYSC_HAS_SIDLEMODE | SYSC_HAS_MIDLEMODE),
+	.idlemodes	= (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
+	.sysc_fields	= &omap_hwmod_sysc_type1,
+};
+
+static struct omap_hwmod_class am43xx_dispc_hwmod_class = {
+	.name	= "dispc",
+	.sysc	= &am43xx_dispc_sysc,
+};
+
+static struct omap_hwmod am43xx_dss_core_hwmod = {
+	.name		= "dss_core",
+	.class		= &omap2_dss_hwmod_class,
+	.clkdm_name	= "dss_clkdm",
+	.main_clk	= "disp_clk",
+	.sdma_reqs	= am43xx_dss_sdma_chs,
+	.prcm = {
+		.omap4 = {
+			.clkctrl_offs = AM43XX_CM_PER_DSS_CLKCTRL_OFFSET,
+			.modulemode   = MODULEMODE_SWCTRL,
+		},
+	},
+};
+
+/* display controller -dispc*/
+
+static struct omap_hwmod am43xx_dss_dispc_hwmod = {
+	.name		= "dss_dispc",
+	.class		= &am43xx_dispc_hwmod_class,
+	.clkdm_name	= "dss_clkdm",
+	.main_clk	= "disp_clk",
+	.prcm = {
+		.omap4 = {
+			.clkctrl_offs = AM43XX_CM_PER_DSS_CLKCTRL_OFFSET,
+		},
+	},
+	.dev_attr	= &am43xx_dss_dispc_dev_attr,
+};
+
+/*RFBI*/
+
+static struct omap_hwmod am43xx_dss_rfbi_hwmod = {
+	.name		= "dss_rfbi",
+	.class		= &omap2_rfbi_hwmod_class,
+	.clkdm_name	= "dss_clkdm",
+	.main_clk	= "disp_clk",
+	.prcm = {
+		.omap4 = {
+			.clkctrl_offs = AM43XX_CM_PER_DSS_CLKCTRL_OFFSET,
+		},
+	},
+};
+
 /* Interfaces */
 static struct omap_hwmod_ocp_if am43xx_l3_main__l4_hs = {
 	.master		= &am33xx_l3_main_hwmod,
@@ -654,6 +726,34 @@ static struct omap_hwmod_ocp_if am43xx_l3_s__qspi = {
 	.user           = OCP_USER_MPU | OCP_USER_SDMA,
 };
 
+static struct omap_hwmod_ocp_if am43xx_dss__l3_main = {
+	.master		= &am43xx_dss_core_hwmod,
+	.slave		= &am33xx_l3_main_hwmod,
+	.clk		= "disp_clk",
+	.user		= OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+static struct omap_hwmod_ocp_if am43xx_l4_ls__dss = {
+	.master		= &am33xx_l4_ls_hwmod,
+	.slave		= &am43xx_dss_core_hwmod,
+	.clk		= "l4ls_gclk",
+	.user		= OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+static struct omap_hwmod_ocp_if am43xx_l4_ls__dss_dispc = {
+	.master		= &am33xx_l4_ls_hwmod,
+	.slave		= &am43xx_dss_dispc_hwmod,
+	.clk		= "l4ls_gclk",
+	.user		= OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+static struct omap_hwmod_ocp_if am43xx_l4_ls__dss_rfbi = {
+	.master		= &am33xx_l4_ls_hwmod,
+	.slave		= &am43xx_dss_rfbi_hwmod,
+	.clk		= "l4ls_gclk",
+	.user		= OCP_USER_MPU | OCP_USER_SDMA,
+};
+
 static struct omap_hwmod_ocp_if *am43xx_hwmod_ocp_ifs[] __initdata = {
 	&am33xx_l4_wkup__synctimer,
 	&am43xx_l4_ls__timer8,
@@ -747,6 +847,10 @@ static struct omap_hwmod_ocp_if *am43xx_hwmod_ocp_ifs[] __initdata = {
 	&am43xx_l4_ls__ocp2scp1,
 	&am43xx_l3_s__usbotgss0,
 	&am43xx_l3_s__usbotgss1,
+	&am43xx_dss__l3_main,
+	&am43xx_l4_ls__dss,
+	&am43xx_l4_ls__dss_dispc,
+	&am43xx_l4_ls__dss_rfbi,
 	NULL,
 };
 
diff --git a/arch/arm/mach-omap2/prcm43xx.h b/arch/arm/mach-omap2/prcm43xx.h
index 7785be9..ad7b3e9 100644
--- a/arch/arm/mach-omap2/prcm43xx.h
+++ b/arch/arm/mach-omap2/prcm43xx.h
@@ -142,5 +142,6 @@
 #define AM43XX_CM_PER_USBPHYOCP2SCP0_CLKCTRL_OFFSET	0x05B8
 #define AM43XX_CM_PER_USB_OTG_SS1_CLKCTRL_OFFSET        0x0268
 #define AM43XX_CM_PER_USBPHYOCP2SCP1_CLKCTRL_OFFSET	0x05C0
+#define AM43XX_CM_PER_DSS_CLKCTRL_OFFSET		0x0a20
 
 #endif
-- 
1.7.9.5

[PATCH V3 4/6] ARM: am43xx-clocks.dtsi: Set parent for disp_clk

[Sathya Prakash M R]

Choose a parent for the disp_clk.

Signed-off-by: Sathya Prakash M R <sathyap@ti.com>
---
 arch/arm/boot/dts/am43xx-clocks.dtsi |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/boot/dts/am43xx-clocks.dtsi b/arch/arm/boot/dts/am43xx-clocks.dtsi
index 85e7d4b..b20e192 100644
--- a/arch/arm/boot/dts/am43xx-clocks.dtsi
+++ b/arch/arm/boot/dts/am43xx-clocks.dtsi
@@ -512,6 +512,8 @@ disp_clk: disp_clk@44df4244 {
 	compatible = "ti,mux-clock";
 	clocks = <&dpll_disp_m2_ck>, <&dpll_core_m5_ck>, <&dpll_per_m2_ck>;
 	reg = <0x44df4244 0x4>;
+	bit-mask = <0x3>;
+	set-rate-parent;
 };
 
 dpll_extdev_ck: dpll_extdev_ck@44df2e60 {
-- 
1.7.9.5

[PATCH V3 5/6] ARM: am4372.dtsi: add omapdss information

[Sathya Prakash M R]

Add DT data for the display subsystem, which contains the following
blocks:
    dss - the wrapper/glue for the display modules
    dispc - display controller
    rfbi - MIPI DBI encoder
dss subsystem of am43x is re use from omap3.

Signed-off-by: Sathya Prakash M R <sathyap@ti.com>
---
 arch/arm/boot/dts/am4372.dtsi |   35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/arch/arm/boot/dts/am4372.dtsi b/arch/arm/boot/dts/am4372.dtsi
index ea55a4e..58fb78b 100644
--- a/arch/arm/boot/dts/am4372.dtsi
+++ b/arch/arm/boot/dts/am4372.dtsi
@@ -684,6 +684,41 @@
 			num-cs = <4>;
                         status = "disabled";
                 };
+
+		dss: dss@4832A000 {
+			compatible = "ti,omap3-dss", "simple-bus";
+			reg = <0x4832A000 0x200>;
+			status = "disabled";
+			ti,hwmods = "dss_core";
+			clocks = <&disp_clk>;
+			clock-names = "fck";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+
+			dispc@4832A400 {
+				compatible = "ti,omap3-dispc";
+				reg = <0x4832A400 0x400>;
+				interrupts = <GIC_SPI 127 IRQ_TYPE_LEVEL_HIGH>;
+				ti,hwmods = "dss_dispc";
+				clocks = <&disp_clk>;
+				clock-names = "fck";
+			};
+
+			dpi: encoder@0 {
+				compatible = "ti,omap3-dpi";
+			};
+
+			rfbi: rfbi@4832A800 {
+				compatible = "ti,omap3-rfbi";
+				reg = <0x4832A800 0x100>;
+				ti,hwmods = "dss_rfbi";
+				clocks = <&disp_clk>;
+				clock-names = "fck";
+			};
+
+		};
+
 	};
 
 	clocks {
-- 
1.7.9.5

[PATCH V3 6/6] ARM: DTS: AM43xx: Add DSS nodes

[Sathya Prakash M R]

Both the AM437x-Gp evm and Am43x-Epos evm
use the same LCD panel.
The lcd timings are added in respective dts files.
Adds display pinctrl and enables required gpio.

Signed-off-by: Sathya Prakash M R <sathyap@ti.com>
---
 arch/arm/boot/dts/am437x-gp-evm.dts  |   77 ++++++++++++++++++++++++++++++++++
 arch/arm/boot/dts/am43x-epos-evm.dts |   73 ++++++++++++++++++++++++++++++++
 2 files changed, 150 insertions(+)

diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts
index 2e79bda..a178e8d 100644
--- a/arch/arm/boot/dts/am437x-gp-evm.dts
+++ b/arch/arm/boot/dts/am437x-gp-evm.dts
@@ -24,6 +24,33 @@
 		brightness-levels = <0 51 53 56 62 75 101 152 255>;
 		default-brightness-level = <8>;
 	};
+
+	aliases {
+		display0 = &lcd0;
+	};
+
+	lcd0: display {
+		compatible = "osddisplays,osd057T0559-34ts", "panel-dpi";
+		label = "lcd";
+		panel-timing {
+			clock-frequency = <33000000>;
+			hactive = <800>;
+			vactive = <480>;
+			hfront-porch = <210>;
+			hback-porch = <16>;
+			hsync-len = <30>;
+			vback-porch = <10>;
+			vfront-porch = <22>;
+			vsync-len = <13>;
+			hsync-active = <0>;
+			vsync-active = <0>;
+			de-active = <1>;
+			pixelclk-active = <1>;
+		};
+		lcd_in: endpoint {
+			remote-endpoint = <&dpi_out>;
+		};
+	};
 };
 
 &am43xx_pinmux {
@@ -46,6 +73,40 @@
 			0x164 MUX_MODE0       /* eCAP0_in_PWM0_out.eCAP0_in_PWM0_out MODE0 */
 		>;
 	};
+
+	dss_pinctrl: dss_pinctrl {
+		pinctrl-single,pins = <
+			0x020 (PIN_OUTPUT_PULLUP | MUX_MODE1) /*gpmc ad 8 -> DSS DATA 23 */
+			0x024 (PIN_OUTPUT_PULLUP | MUX_MODE1)
+			0x028 (PIN_OUTPUT_PULLUP | MUX_MODE1)
+			0x02C (PIN_OUTPUT_PULLUP | MUX_MODE1)
+			0x030 (PIN_OUTPUT_PULLUP | MUX_MODE1)
+			0x034 (PIN_OUTPUT_PULLUP | MUX_MODE1)
+			0x038 (PIN_OUTPUT_PULLUP | MUX_MODE1)
+			0x03C (PIN_OUTPUT_PULLUP | MUX_MODE1) /*gpmc ad 15 -> DSS DATA 16 */
+			0x0A0 (PIN_OUTPUT_PULLUP | MUX_MODE0) /* DSS DATA 0 */
+			0x0A4 (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0A8 (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0AC (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0B0 (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0B4 (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0B8 (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0BC (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0C0 (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0C4 (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0C8 (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0CC (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0D0 (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0D4 (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0D8 (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0DC (PIN_OUTPUT_PULLUP | MUX_MODE0) /* DSS DATA 15 */
+			0x0E0 (PIN_OUTPUT_PULLUP | MUX_MODE0) /* DSS VSYNC */
+			0x0E4 (PIN_OUTPUT_PULLUP | MUX_MODE0) /* DSS HSYNC */
+			0x0E8 (PIN_OUTPUT_PULLUP | MUX_MODE0) /* DSS PCLK */
+			0x0EC (PIN_OUTPUT_PULLUP | MUX_MODE0) /* DSS AC BIAS EN */
+			0x238 (PIN_OUTPUT_PULLUP | MUX_MODE7) /* GPIO 5_8 to select LCD / HDMI */
+		>;
+	};
 };
 
 &i2c0 {
@@ -69,3 +130,19 @@
 	pinctrl-names = "default";
 	pinctrl-0 = <&ecap0_pins>;
 };
+
+&gpio5 {
+	status = "okay";
+};
+
+&dss {
+	status = "ok";
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&dss_pinctrl>;
+
+	dpi_out: endpoint@0 {
+		remote-endpoint = <&lcd_in>;
+		data-lines = <24>;
+	};
+};
diff --git a/arch/arm/boot/dts/am43x-epos-evm.dts b/arch/arm/boot/dts/am43x-epos-evm.dts
index 2ebcde6..3f9643b 100644
--- a/arch/arm/boot/dts/am43x-epos-evm.dts
+++ b/arch/arm/boot/dts/am43x-epos-evm.dts
@@ -27,6 +27,33 @@
 		enable-active-high;
 	};
 
+	aliases {
+		display0 = &lcd0;
+	};
+
+	lcd0: display {
+		compatible = "osddisplays,osd057T0559-34ts", "panel-dpi";
+		label = "lcd";
+		panel-timing {
+			clock-frequency = <33000000>;
+			hactive = <800>;
+			vactive = <480>;
+			hfront-porch = <210>;
+			hback-porch = <16>;
+			hsync-len = <30>;
+			vback-porch = <10>;
+			vfront-porch = <22>;
+			vsync-len = <13>;
+			hsync-active = <0>;
+			vsync-active = <0>;
+			de-active = <1>;
+			pixelclk-active = <1>;
+		};
+		lcd_in: endpoint {
+			remote-endpoint = <&dpi_out>;
+		};
+	};
+
 	am43xx_pinmux: pinmux@44e10800 {
 		cpsw_default: cpsw_default {
 			pinctrl-single,pins = <
@@ -122,6 +149,40 @@
 				0x19c (PIN_OUTPUT | MUX_MODE3)          /* mcasp0_ahclkr.spi1_cs0 */
 			>;
 		};
+
+		dss_pinctrl: dss_pinctrl {
+		pinctrl-single,pins = <
+			0x020 (PIN_OUTPUT_PULLUP | MUX_MODE1) /*gpmc ad 8 -> DSS DATA 23 */
+			0x024 (PIN_OUTPUT_PULLUP | MUX_MODE1)
+			0x028 (PIN_OUTPUT_PULLUP | MUX_MODE1)
+			0x02C (PIN_OUTPUT_PULLUP | MUX_MODE1)
+			0x030 (PIN_OUTPUT_PULLUP | MUX_MODE1)
+			0x034 (PIN_OUTPUT_PULLUP | MUX_MODE1)
+			0x038 (PIN_OUTPUT_PULLUP | MUX_MODE1)
+			0x03C (PIN_OUTPUT_PULLUP | MUX_MODE1) /*gpmc ad 15 -> DSS DATA 16 */
+			0x0A0 (PIN_OUTPUT_PULLUP | MUX_MODE0) /* DSS DATA 0 */
+			0x0A4 (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0A8 (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0AC (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0B0 (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0B4 (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0B8 (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0BC (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0C0 (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0C4 (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0C8 (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0CC (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0D0 (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0D4 (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0D8 (PIN_OUTPUT_PULLUP | MUX_MODE0)
+			0x0DC (PIN_OUTPUT_PULLUP | MUX_MODE0) /* DSS DATA 15 */
+			0x0E0 (PIN_OUTPUT_PULLUP | MUX_MODE0) /* DSS VSYNC */
+			0x0E4 (PIN_OUTPUT_PULLUP | MUX_MODE0) /* DSS HSYNC */
+			0x0E8 (PIN_OUTPUT_PULLUP | MUX_MODE0) /* DSS PCLK */
+			0x0EC (PIN_OUTPUT_PULLUP | MUX_MODE0) /* DSS AC BIAS EN */
+			0x08C (PIN_OUTPUT_PULLUP | MUX_MODE7) /* GPMC CLK -> GPIO 2_1 to select LCD / HDMI */
+			>;
+		};
 	};
 
 	matrix_keypad: matrix_keypad@0 {
@@ -279,3 +340,15 @@
 	pinctrl-0 = <&spi1_pins>;
 	status = "okay";
 };
+
+&dss {
+	status = "ok";
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&dss_pinctrl>;
+
+	dpi_out: endpoint@0 {
+		remote-endpoint = <&lcd_in>;
+		data-lines = <24>;
+	};
+};
-- 
1.7.9.5

Re: [PATCH V3 0/6] Add Display support for AM43xx

[Sekhar Nori]

On Monday 24 March 2014 04:31 PM, Sathya Prakash M R wrote:
> This patch series adds DSS support to the AM43x. The DPI LCD
> panel is supported on both am43x-epos-evm and am437x-gp-evm.
> The LCD panel is from OSD model: OSD057T0559-34TS
> 
> Version 1 of this series can be found below[1]:
> [1]: https://patchwork.kernel.org/patch/3274421/
> 
> Tested on am43x-epos-evm and am437x-gp-evm.
> 
> Dependent patches :
> Sourav patches adding device nodes for epos [2] and gp [3] evm
> [2]: https://patchwork.kernel.org/patch/3246701/
> [3]: https://patchwork.kernel.org/patch/3246751/
> 
> AM43xx has a dedicated display pll. Hence tomi patch improving
> func clock handling is needed [4]
> [4]: https://patchwork.kernel.org/patch/3196221/
> 
> Tomi patch adding DT support to DSS [5]
> [5]: https://patchwork.kernel.org/patch/3516341/

I think it will help to rebase the series to latest linux-next or Tomi's
-next branch since he has already committed a change to move fbdev
drivers to drivers/video/fbdev.

I tried giving this series a spin, but could not do so because of this.

Rest of the dependencies seem to be already present in linux-next so
there is good progress there.

Thanks,
Sekhar

Re: [PATCH V3 5/6] ARM: am4372.dtsi: add omapdss information

[Sekhar Nori]

On Monday 24 March 2014 04:31 PM, Sathya Prakash M R wrote:
> Add DT data for the display subsystem, which contains the following
> blocks:
>     dss - the wrapper/glue for the display modules
>     dispc - display controller
>     rfbi - MIPI DBI encoder
> dss subsystem of am43x is re use from omap3.
> 
> Signed-off-by: Sathya Prakash M R <sathyap@ti.com>
> ---
>  arch/arm/boot/dts/am4372.dtsi |   35 +++++++++++++++++++++++++++++++++++
>  1 file changed, 35 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/am4372.dtsi b/arch/arm/boot/dts/am4372.dtsi
> index ea55a4e..58fb78b 100644
> --- a/arch/arm/boot/dts/am4372.dtsi
> +++ b/arch/arm/boot/dts/am4372.dtsi
> @@ -684,6 +684,41 @@
>  			num-cs = <4>;
>                          status = "disabled";
>                  };
> +
> +		dss: dss@4832A000 {
> +			compatible = "ti,omap3-dss", "simple-bus";
> +			reg = <0x4832A000 0x200>;

We use lower case hex numbers in kernel and even in dts files.

Thanks,
Sekhar

Re: [PATCH V3 6/6] ARM: DTS: AM43xx: Add DSS nodes

[Sekhar Nori]

On Monday 24 March 2014 04:31 PM, Sathya Prakash M R wrote:
> Both the AM437x-Gp evm and Am43x-Epos evm
> use the same LCD panel.
> The lcd timings are added in respective dts files.
> Adds display pinctrl and enables required gpio.
> 
> Signed-off-by: Sathya Prakash M R <sathyap@ti.com>
> ---
>  arch/arm/boot/dts/am437x-gp-evm.dts  |   77 ++++++++++++++++++++++++++++++++++
>  arch/arm/boot/dts/am43x-epos-evm.dts |   73 ++++++++++++++++++++++++++++++++
>  2 files changed, 150 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts
> index 2e79bda..a178e8d 100644
> --- a/arch/arm/boot/dts/am437x-gp-evm.dts
> +++ b/arch/arm/boot/dts/am437x-gp-evm.dts
> @@ -24,6 +24,33 @@
>  		brightness-levels = <0 51 53 56 62 75 101 152 255>;
>  		default-brightness-level = <8>;
>  	};
> +
> +	aliases {
> +		display0 = &lcd0;
> +	};
> +
> +	lcd0: display {
> +		compatible = "osddisplays,osd057T0559-34ts", "panel-dpi";
                                                ^

Lower case 'T' for consistency with how bindings are usually defined?

> +	dss_pinctrl: dss_pinctrl {
> +		pinctrl-single,pins = <
> +			0x020 (PIN_OUTPUT_PULLUP | MUX_MODE1) /*gpmc ad 8 -> DSS DATA 23 */
> +			0x024 (PIN_OUTPUT_PULLUP | MUX_MODE1)
> +			0x028 (PIN_OUTPUT_PULLUP | MUX_MODE1)
> +			0x02C (PIN_OUTPUT_PULLUP | MUX_MODE1)

Lower case hex number here too and everywhere else.

Thanks,
Sekhar

Re: [PATCH V3 2/6] ARM: AM43xx: fix dpll init in bypass mode

[Paul Walmsley]

On Mon, 24 Mar 2014, Sathya Prakash M R wrote:

> From: Tomi Valkeinen <tomi.valkeinen@ti.com>
> 
> On AM43xx, if a PLL is in bypass at kernel init, the code in
> omap2_get_dpll_rate() will not realize this and will try to calculate
> the clock rate using the multiplier and the divider, resulting in
> errors.
> 
> omap2_init_dpll_parent() has similar issue.
> 
> Add the missing soc_is_am43xx() check to make the code work on AM43xx.
> 
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
> Signed-off-by: Sathya Prakash M R <sathyap@ti.com>

Thanks, queued for v3.15-rc.

- Paul