[kingfishe] first draft

Change-Id: I83e9d07e020cc3ee399e29915a56333a111781b0
Signed-off-by: repo syncronan <ronan@iot.bzh>

1 files changed, 76 insertions, 0 deletions

diff --git a/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0064-ADV7511-limit-maximum-pixelclock.patch b/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0064-ADV7511-limit-maximum-pixelclock.patch
new file mode 100644
index 0000000..3ca9284
--- /dev/null
+++ b/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0064-ADV7511-limit-maximum-pixelclock.patch
@@ -0,0 +1,76 @@
+From 1df040dabaec1697f81b71f15739b499f3e4266e Mon Sep 17 00:00:00 2001
+From: Andrey Gusakov <andrey.gusakov@cogentembedded.com>
+Date: Fri, 9 Jun 2017 20:12:26 +0300
+Subject: [PATCH] ADV7511: limit maximum pixelclock
+
+DU0 (RGB) supports clock freq up to 100MHz only.
+Add ability to set max clock via dts.
+
+Signed-off-by: Andrey Gusakov <andrey.gusakov@cogentembedded.com>
+---
+ drivers/gpu/drm/bridge/adv7511/adv7511.h     | 3 +++
+ drivers/gpu/drm/bridge/adv7511/adv7511_drv.c | 6 +++++-
+ 2 files changed, 8 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511.h b/drivers/gpu/drm/bridge/adv7511/adv7511.h
+index 161c923..12ee238 100644
+--- a/drivers/gpu/drm/bridge/adv7511/adv7511.h
++++ b/drivers/gpu/drm/bridge/adv7511/adv7511.h
+@@ -242,6 +242,7 @@ enum adv7511_sync_polarity {
+  * @input_style:		The input component arrangement variant
+  * @input_justification:	Video input format bit justification
+  * @clock_delay:		Clock delay for the input clock (in ps)
++ * @clock_max_rate:		Clock maximum rate (in Hz)
+  * @embedded_sync:		Video input uses BT.656-style embedded sync
+  * @sync_pulse:			Select the sync pulse
+  * @vsync_polarity:		vsync input signal configuration
+@@ -255,6 +256,7 @@ struct adv7511_link_config {
+ 	enum adv7511_input_justification input_justification;
+ 
+ 	int clock_delay;
++	int clock_max_rate;
+ 
+ 	bool embedded_sync;
+ 	enum adv7511_input_sync_pulse sync_pulse;
+@@ -307,6 +309,7 @@ struct adv7511 {
+ 	bool powered;
+ 
+ 	struct drm_display_mode curr_mode;
++	int clock_max_rate;
+ 
+ 	unsigned int f_tmds;
+ 
+diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
+index 41b45de..5dfa619 100644
+--- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
++++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
+@@ -323,6 +323,7 @@ static void adv7511_set_link_config(struct adv7511 *adv7511,
+ 	adv7511->hsync_polarity = config->hsync_polarity;
+ 	adv7511->vsync_polarity = config->vsync_polarity;
+ 	adv7511->rgb = config->input_colorspace == HDMI_COLORSPACE_RGB;
++	adv7511->clock_max_rate = config->clock_max_rate;
+ }
+ 
+ static void adv7511_power_on(struct adv7511 *adv7511)
+@@ -621,7 +622,7 @@ static int adv7511_get_modes(struct adv7511 *adv7511,
+ static int adv7511_mode_valid(struct adv7511 *adv7511,
+ 			      struct drm_display_mode *mode)
+ {
+-	if (mode->clock > 165000)
++	if (mode->clock > adv7511->clock_max_rate)
+ 		return MODE_CLOCK_HIGH;
+ 
+ 	return MODE_OK;
+@@ -917,6 +918,9 @@ static int adv7511_parse_dt(struct device_node *np,
+ 	if (config->clock_delay < -1200 || config->clock_delay > 1600)
+ 		return -EINVAL;
+ 
++	if (of_property_read_u32(np, "adi,clock-max-rate", &config->clock_max_rate))
++		config->clock_max_rate = 166000;
++
+ 	config->embedded_sync = of_property_read_bool(np, "adi,embedded-sync");
+ 
+ 	/* Hardcode the sync pulse configurations for now. */
+-- 
+1.9.1
+