[U-Boot] [PATCH 1/8] imx: i2c: Zap unnecessary malloc() calls

[U-Boot] [PATCH 1/8] imx: i2c: Zap unnecessary malloc() calls

[Marek Vasut]

The malloc() calls are unnecessary, just allocate the stuff on stack.
While at it, reorder the code a little, so that only one variable is
used for the text, use snprintf() instead of sprintf() and use %01d
as a formatting string to avoid any possible overflows.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Cc: Nikita Kiryanov <nikita@compulab.co.il>
Cc: Sean Cross <xobs@kosagi.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Tim Harvey <tharvey@gateworks.com>
---
 arch/arm/imx-common/i2c-mxv7.c | 24 ++++++++----------------
 1 file changed, 8 insertions(+), 16 deletions(-)

diff --git a/arch/arm/imx-common/i2c-mxv7.c b/arch/arm/imx-common/i2c-mxv7.c
index 34f5387..1a632e7 100644
--- a/arch/arm/imx-common/i2c-mxv7.c
+++ b/arch/arm/imx-common/i2c-mxv7.c
@@ -73,26 +73,21 @@ static void * const i2c_bases[] = {
 int setup_i2c(unsigned i2c_index, int speed, int slave_addr,
 	      struct i2c_pads_info *p)
 {
-	char *name1, *name2;
+	char name[9];
 	int ret;
 
 	if (i2c_index >= ARRAY_SIZE(i2c_bases))
 		return -EINVAL;
 
-	name1 = malloc(9);
-	name2 = malloc(9);
-	if (!name1 || !name2)
-		return -ENOMEM;
-
-	sprintf(name1, "i2c_sda%d", i2c_index);
-	sprintf(name2, "i2c_scl%d", i2c_index);
-	ret = gpio_request(p->sda.gp, name1);
+	snprintf(name, sizeof(name), "i2c_sda%01d", i2c_index);
+	ret = gpio_request(p->sda.gp, name);
 	if (ret)
-		goto err_req1;
+		return ret;
 
-	ret = gpio_request(p->scl.gp, name2);
+	snprintf(name, sizeof(name), "i2c_scl%01d", i2c_index);
+	ret = gpio_request(p->scl.gp, name);
 	if (ret)
-		goto err_req2;
+		goto err_req;
 
 	/* Enable i2c clock */
 	ret = enable_i2c_clk(1, i2c_index);
@@ -112,11 +107,8 @@ int setup_i2c(unsigned i2c_index, int speed, int slave_addr,
 err_idle:
 err_clk:
 	gpio_free(p->scl.gp);
-err_req2:
+err_req:
 	gpio_free(p->sda.gp);
-err_req1:
-	free(name1);
-	free(name2);
 
 	return ret;
 }
-- 
2.1.3

[U-Boot] [PATCH 2/8] arm: mx6: gw_ventana: Define CONFIG_SYS_MALLOC_F_LEN

[Marek Vasut]

This board uses setup_i2c() in SPL. The setup_i2c() function internally
calls gpio_request(), which in turn internally calls strdup(). The strdup()
requires a running mallocator, so this patch makes the mallocator available.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Cc: Nikita Kiryanov <nikita@compulab.co.il>
Cc: Sean Cross <xobs@kosagi.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Tim Harvey <tharvey@gateworks.com>
---
 include/configs/gw_ventana.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/configs/gw_ventana.h b/include/configs/gw_ventana.h
index 620f950..4f137fc 100644
--- a/include/configs/gw_ventana.h
+++ b/include/configs/gw_ventana.h
@@ -39,6 +39,7 @@
 
 /* Size of malloc() pool */
 #define CONFIG_SYS_MALLOC_LEN		(10 * 1024 * 1024)
+#define CONFIG_SYS_MALLOC_F_LEN		(1 << 10)
 
 /* Init Functions */
 #define CONFIG_BOARD_EARLY_INIT_F
-- 
2.1.3

[U-Boot] [PATCH 2/8] arm: mx6: gw_ventana: Define CONFIG_SYS_MALLOC_F_LEN

[Stefano Babic]

On 16/12/2014 14:09, Marek Vasut wrote:
> This board uses setup_i2c() in SPL. The setup_i2c() function internally
> calls gpio_request(), which in turn internally calls strdup(). The strdup()
> requires a running mallocator, so this patch makes the mallocator available.
> 
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Igor Grinberg <grinberg@compulab.co.il>
> Cc: Nikita Kiryanov <nikita@compulab.co.il>
> Cc: Sean Cross <xobs@kosagi.com>
> Cc: Simon Glass <sjg@chromium.org>
> Cc: Stefano Babic <sbabic@denx.de>
> Cc: Tim Harvey <tharvey@gateworks.com>
> ---

Applied to u-boot-imx, thanks !

Best regards,
Stefano Babic

-- 
=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de
=====================================================================

[U-Boot] [PATCH 3/8] arm: mx6: novena: Define CONFIG_SYS_MALLOC_F_LEN

[Marek Vasut]

This board uses setup_i2c() in SPL. The setup_i2c() function internally
calls gpio_request(), which in turn internally calls strdup(). The strdup()
requires a running mallocator, so this patch makes the mallocator available.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Cc: Nikita Kiryanov <nikita@compulab.co.il>
Cc: Sean Cross <xobs@kosagi.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Tim Harvey <tharvey@gateworks.com>
---
 include/configs/novena.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/configs/novena.h b/include/configs/novena.h
index 879141a..0f3621a 100644
--- a/include/configs/novena.h
+++ b/include/configs/novena.h
@@ -115,6 +115,7 @@
 #define CONFIG_SYS_MEMTEST_END		0x20000000
 
 #define CONFIG_SYS_MALLOC_LEN		(64 * 1024 * 1024)
+#define CONFIG_SYS_MALLOC_F_LEN		(1 << 10)
 
 /* SPL */
 #define CONFIG_SPL_FAT_SUPPORT
-- 
2.1.3

[U-Boot] [PATCH 3/8] arm: mx6: novena: Define CONFIG_SYS_MALLOC_F_LEN

[Stefano Babic]

On 16/12/2014 14:09, Marek Vasut wrote:
> This board uses setup_i2c() in SPL. The setup_i2c() function internally
> calls gpio_request(), which in turn internally calls strdup(). The strdup()
> requires a running mallocator, so this patch makes the mallocator available.
> 
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Igor Grinberg <grinberg@compulab.co.il>
> Cc: Nikita Kiryanov <nikita@compulab.co.il>
> Cc: Sean Cross <xobs@kosagi.com>
> Cc: Simon Glass <sjg@chromium.org>
> Cc: Stefano Babic <sbabic@denx.de>
> Cc: Tim Harvey <tharvey@gateworks.com>
> ---
>  include/configs/novena.h | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/include/configs/novena.h b/include/configs/novena.h
> index 879141a..0f3621a 100644
> --- a/include/configs/novena.h
> +++ b/include/configs/novena.h
> @@ -115,6 +115,7 @@
>  #define CONFIG_SYS_MEMTEST_END		0x20000000
>  
>  #define CONFIG_SYS_MALLOC_LEN		(64 * 1024 * 1024)
> +#define CONFIG_SYS_MALLOC_F_LEN		(1 << 10)
>  
>  /* SPL */
>  #define CONFIG_SPL_FAT_SUPPORT
> 

Applied to u-boot-imx, thanks !

Best regards,
Stefano Babic
-- 
=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de
=====================================================================

[U-Boot] [PATCH 4/8] arm: mx6: novena: Minor coding style fix

[Marek Vasut]

Just zap multiple spaces and replace them with tabs properly.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Cc: Nikita Kiryanov <nikita@compulab.co.il>
Cc: Sean Cross <xobs@kosagi.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Tim Harvey <tharvey@gateworks.com>
---
 board/kosagi/novena/novena.c | 26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/board/kosagi/novena/novena.c b/board/kosagi/novena/novena.c
index 6add9e5..e303a57 100644
--- a/board/kosagi/novena/novena.c
+++ b/board/kosagi/novena/novena.c
@@ -172,19 +172,19 @@ struct display_info_t const displays[] = {
 		.detect	= detect_hdmi,
 		.enable	= enable_hdmi,
 		.mode	= {
-			.name           = "HDMI",
-			.refresh        = 60,
-			.xres           = 1024,
-			.yres           = 768,
-			.pixclock       = 15385,
-			.left_margin    = 220,
-			.right_margin   = 40,
-			.upper_margin   = 21,
-			.lower_margin   = 7,
-			.hsync_len      = 60,
-			.vsync_len      = 10,
-			.sync           = FB_SYNC_EXT,
-			.vmode          = FB_VMODE_NONINTERLACED
+			.name		= "HDMI",
+			.refresh	= 60,
+			.xres		= 1024,
+			.yres		= 768,
+			.pixclock	= 15385,
+			.left_margin	= 220,
+			.right_margin	= 40,
+			.upper_margin	= 21,
+			.lower_margin	= 7,
+			.hsync_len	= 60,
+			.vsync_len	= 10,
+			.sync		= FB_SYNC_EXT,
+			.vmode		= FB_VMODE_NONINTERLACED
 		}
 	}
 };
-- 
2.1.3

[U-Boot] [PATCH 4/8] arm: mx6: novena: Minor coding style fix

[Stefano Babic]

On 16/12/2014 14:09, Marek Vasut wrote:
> Just zap multiple spaces and replace them with tabs properly.
> 
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Igor Grinberg <grinberg@compulab.co.il>
> Cc: Nikita Kiryanov <nikita@compulab.co.il>
> Cc: Sean Cross <xobs@kosagi.com>
> Cc: Simon Glass <sjg@chromium.org>
> Cc: Stefano Babic <sbabic@denx.de>
> Cc: Tim Harvey <tharvey@gateworks.com>
> ---

Applied to u-boot-imx, thanks !

Best regards,
Stefano Babic


-- 
=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de
=====================================================================

[U-Boot] [PATCH 5/8] arm: mx6: novena: Minor config file fix

[Marek Vasut]

Sequence like the following is completely useless and results from
an errorneous ordering of the statements during development. Zap it.
 #ifdef FOO
 #define FOO

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Cc: Nikita Kiryanov <nikita@compulab.co.il>
Cc: Sean Cross <xobs@kosagi.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Tim Harvey <tharvey@gateworks.com>
---
 include/configs/novena.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/include/configs/novena.h b/include/configs/novena.h
index 0f3621a..4924cbf 100644
--- a/include/configs/novena.h
+++ b/include/configs/novena.h
@@ -226,7 +226,6 @@
 
 /* Video output */
 #ifdef CONFIG_VIDEO
-#define CONFIG_VIDEO
 #define CONFIG_VIDEO_IPUV3
 #define CONFIG_CFB_CONSOLE
 #define CONFIG_VGA_AS_SINGLE_DEVICE
-- 
2.1.3

[U-Boot] [PATCH 5/8] arm: mx6: novena: Minor config file fix

[Stefano Babic]

On 16/12/2014 14:09, Marek Vasut wrote:
> Sequence like the following is completely useless and results from
> an errorneous ordering of the statements during development. Zap it.
>  #ifdef FOO
>  #define FOO
> 
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Igor Grinberg <grinberg@compulab.co.il>
> Cc: Nikita Kiryanov <nikita@compulab.co.il>
> Cc: Sean Cross <xobs@kosagi.com>
> Cc: Simon Glass <sjg@chromium.org>
> Cc: Stefano Babic <sbabic@denx.de>
> Cc: Tim Harvey <tharvey@gateworks.com>
> ---


Applied to u-boot-imx, thanks !

Best regards,
Stefano Babic


-- 
=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de
=====================================================================

[U-Boot] [PATCH 6/8] arm: mx6: novena: Pull GPIO definitions into header

[Marek Vasut]

Pull the definitions of GPIOs into a separate header file, so that
they can be used across all source files.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Cc: Nikita Kiryanov <nikita@compulab.co.il>
Cc: Sean Cross <xobs@kosagi.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Tim Harvey <tharvey@gateworks.com>
---
 board/kosagi/novena/novena.c     |  6 ++----
 board/kosagi/novena/novena.h     | 23 +++++++++++++++++++++++
 board/kosagi/novena/novena_spl.c | 10 ++--------
 3 files changed, 27 insertions(+), 12 deletions(-)
 create mode 100644 board/kosagi/novena/novena.h

diff --git a/board/kosagi/novena/novena.c b/board/kosagi/novena/novena.c
index e303a57..5493e07 100644
--- a/board/kosagi/novena/novena.c
+++ b/board/kosagi/novena/novena.c
@@ -36,11 +36,9 @@
 #include <power/pfuze100_pmic.h>
 #include <stdio_dev.h>
 
-DECLARE_GLOBAL_DATA_PTR;
+#include "novena.h"
 
-#define NOVENA_BUTTON_GPIO	IMX_GPIO_NR(4, 14)
-#define NOVENA_SD_WP		IMX_GPIO_NR(1, 2)
-#define NOVENA_SD_CD		IMX_GPIO_NR(1, 4)
+DECLARE_GLOBAL_DATA_PTR;
 
 /*
  * GPIO button
diff --git a/board/kosagi/novena/novena.h b/board/kosagi/novena/novena.h
new file mode 100644
index 0000000..6613ad4
--- /dev/null
+++ b/board/kosagi/novena/novena.h
@@ -0,0 +1,23 @@
+/*
+ * Novena board support
+ *
+ * Copyright (C) 2014 Marek Vasut <marex@denx.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __BOARD_KOSAGI_NOVENA_NOVENA_H__
+#define __BOARD_KOSAGI_NOVENA_NOVENA_H__
+
+#define NOVENA_AUDIO_PWRON		IMX_GPIO_NR(5, 17)
+#define NOVENA_BUTTON_GPIO		IMX_GPIO_NR(4, 14)
+#define NOVENA_FPGA_RESET_N_GPIO	IMX_GPIO_NR(5, 7)
+#define NOVENA_HDMI_GHOST_HPD		IMX_GPIO_NR(5, 4)
+#define NOVENA_PCIE_DISABLE_GPIO	IMX_GPIO_NR(2, 16)
+#define NOVENA_PCIE_POWER_ON_GPIO	IMX_GPIO_NR(7, 12)
+#define NOVENA_PCIE_RESET_GPIO		IMX_GPIO_NR(3, 29)
+#define NOVENA_PCIE_WAKE_UP_GPIO	IMX_GPIO_NR(3, 22)
+#define NOVENA_SD_CD			IMX_GPIO_NR(1, 4)
+#define NOVENA_SD_WP			IMX_GPIO_NR(1, 2)
+
+#endif	/* __BOARD_KOSAGI_NOVENA_NOVENA_H__ */
diff --git a/board/kosagi/novena/novena_spl.c b/board/kosagi/novena/novena_spl.c
index c07735a..5ebc59b 100644
--- a/board/kosagi/novena/novena_spl.c
+++ b/board/kosagi/novena/novena_spl.c
@@ -25,6 +25,8 @@
 
 #include <asm/arch/mx6-ddr.h>
 
+#include "novena.h"
+
 DECLARE_GLOBAL_DATA_PTR;
 
 #define UART_PAD_CTRL						\
@@ -68,14 +70,6 @@ DECLARE_GLOBAL_DATA_PTR;
 
 #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
 
-#define NOVENA_AUDIO_PWRON		IMX_GPIO_NR(5, 17)
-#define NOVENA_FPGA_RESET_N_GPIO	IMX_GPIO_NR(5, 7)
-#define NOVENA_HDMI_GHOST_HPD		IMX_GPIO_NR(5, 4)
-#define NOVENA_PCIE_RESET_GPIO		IMX_GPIO_NR(3, 29)
-#define NOVENA_PCIE_POWER_ON_GPIO	IMX_GPIO_NR(7, 12)
-#define NOVENA_PCIE_WAKE_UP_GPIO	IMX_GPIO_NR(3, 22)
-#define NOVENA_PCIE_DISABLE_GPIO	IMX_GPIO_NR(2, 16)
-
 /*
  * Audio
  */
-- 
2.1.3

[U-Boot] [PATCH 6/8] arm: mx6: novena: Pull GPIO definitions into header

[Stefano Babic]

On 16/12/2014 14:09, Marek Vasut wrote:
> Pull the definitions of GPIOs into a separate header file, so that
> they can be used across all source files.
> 
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Igor Grinberg <grinberg@compulab.co.il>
> Cc: Nikita Kiryanov <nikita@compulab.co.il>
> Cc: Sean Cross <xobs@kosagi.com>
> Cc: Simon Glass <sjg@chromium.org>
> Cc: Stefano Babic <sbabic@denx.de>
> Cc: Tim Harvey <tharvey@gateworks.com>
> ---


Applied to u-boot-imx, thanks !

Best regards,
Stefano Babic


-- 
=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de
=====================================================================

[U-Boot] [PATCH 7/8] arm: mx6: novena: Pull video handling into separate file

[Marek Vasut]

Pull all of the video handling into a separate file, since a lot
more code will be added and such code would polute the board file.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Cc: Nikita Kiryanov <nikita@compulab.co.il>
Cc: Sean Cross <xobs@kosagi.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Tim Harvey <tharvey@gateworks.com>
---
 board/kosagi/novena/Makefile |   1 +
 board/kosagi/novena/novena.c |  79 +--------------------------------
 board/kosagi/novena/novena.h |   2 +
 board/kosagi/novena/video.c  | 102 +++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 106 insertions(+), 78 deletions(-)
 create mode 100644 board/kosagi/novena/video.c

diff --git a/board/kosagi/novena/Makefile b/board/kosagi/novena/Makefile
index 6fba177..6893b63 100644
--- a/board/kosagi/novena/Makefile
+++ b/board/kosagi/novena/Makefile
@@ -8,4 +8,5 @@ ifdef CONFIG_SPL_BUILD
 obj-y	:= novena_spl.o
 else
 obj-y	:= novena.o
+obj-$(CONFIG_VIDEO_IPUV3)	+= video.o
 endif
diff --git a/board/kosagi/novena/novena.c b/board/kosagi/novena/novena.c
index 5493e07..e7a6adb 100644
--- a/board/kosagi/novena/novena.c
+++ b/board/kosagi/novena/novena.c
@@ -152,87 +152,10 @@ int board_mmc_init(bd_t *bis)
 }
 #endif
 
-/*
- * Video over HDMI
- */
-#if defined(CONFIG_VIDEO_IPUV3)
-static void enable_hdmi(struct display_info_t const *dev)
-{
-	imx_enable_hdmi_phy();
-}
-
-struct display_info_t const displays[] = {
-	{
-		/* HDMI Output */
-		.bus	= -1,
-		.addr	= 0,
-		.pixfmt	= IPU_PIX_FMT_RGB24,
-		.detect	= detect_hdmi,
-		.enable	= enable_hdmi,
-		.mode	= {
-			.name		= "HDMI",
-			.refresh	= 60,
-			.xres		= 1024,
-			.yres		= 768,
-			.pixclock	= 15385,
-			.left_margin	= 220,
-			.right_margin	= 40,
-			.upper_margin	= 21,
-			.lower_margin	= 7,
-			.hsync_len	= 60,
-			.vsync_len	= 10,
-			.sync		= FB_SYNC_EXT,
-			.vmode		= FB_VMODE_NONINTERLACED
-		}
-	}
-};
-
-size_t display_count = ARRAY_SIZE(displays);
-
-static void setup_display(void)
-{
-	struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
-	struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
-
-	enable_ipu_clock();
-	imx_setup_hdmi();
-
-	/* Turn on LDB0,IPU,IPU DI0 clocks */
-	setbits_le32(&mxc_ccm->CCGR3, MXC_CCM_CCGR3_LDB_DI0_MASK);
-
-	/* set LDB0, LDB1 clk select to 011/011 */
-	clrsetbits_le32(&mxc_ccm->cs2cdr,
-			MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK |
-			MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK,
-			(3 << MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET) |
-			(3 << MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_OFFSET));
-
-	setbits_le32(&mxc_ccm->cscmr2, MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV);
-
-	setbits_le32(&mxc_ccm->chsccdr, CHSCCDR_CLK_SEL_LDB_DI0 <<
-		     MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
-
-	writel(IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES |
-	       IOMUXC_GPR2_DI1_VS_POLARITY_ACTIVE_HIGH |
-	       IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_LOW |
-	       IOMUXC_GPR2_BIT_MAPPING_CH1_SPWG |
-	       IOMUXC_GPR2_DATA_WIDTH_CH1_18BIT |
-	       IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG |
-	       IOMUXC_GPR2_DATA_WIDTH_CH0_18BIT |
-	       IOMUXC_GPR2_LVDS_CH1_MODE_DISABLED |
-	       IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0,
-	       &iomux->gpr[2]);
-
-	clrsetbits_le32(&iomux->gpr[3], IOMUXC_GPR3_LVDS0_MUX_CTL_MASK,
-			IOMUXC_GPR3_MUX_SRC_IPU1_DI0 <<
-			IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET);
-}
-#endif
-
 int board_early_init_f(void)
 {
 #if defined(CONFIG_VIDEO_IPUV3)
-	setup_display();
+	setup_display_clock();
 #endif
 
 	return 0;
diff --git a/board/kosagi/novena/novena.h b/board/kosagi/novena/novena.h
index 6613ad4..244004d 100644
--- a/board/kosagi/novena/novena.h
+++ b/board/kosagi/novena/novena.h
@@ -20,4 +20,6 @@
 #define NOVENA_SD_CD			IMX_GPIO_NR(1, 4)
 #define NOVENA_SD_WP			IMX_GPIO_NR(1, 2)
 
+void setup_display_clock(void);
+
 #endif	/* __BOARD_KOSAGI_NOVENA_NOVENA_H__ */
diff --git a/board/kosagi/novena/video.c b/board/kosagi/novena/video.c
new file mode 100644
index 0000000..fdcd100
--- /dev/null
+++ b/board/kosagi/novena/video.c
@@ -0,0 +1,102 @@
+/*
+ * Novena video output support
+ *
+ * Copyright (C) 2014 Marek Vasut <marex@denx.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/errno.h>
+#include <asm/gpio.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/crm_regs.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/iomux.h>
+#include <asm/arch/mxc_hdmi.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/imx-common/iomux-v3.h>
+#include <asm/imx-common/mxc_i2c.h>
+#include <asm/imx-common/video.h>
+#include <i2c.h>
+#include <input.h>
+#include <ipu_pixfmt.h>
+#include <linux/fb.h>
+#include <linux/input.h>
+#include <malloc.h>
+#include <stdio_dev.h>
+
+#include "novena.h"
+
+static void enable_hdmi(struct display_info_t const *dev)
+{
+	imx_enable_hdmi_phy();
+}
+
+struct display_info_t const displays[] = {
+	{
+		/* HDMI Output */
+		.bus	= -1,
+		.addr	= 0,
+		.pixfmt	= IPU_PIX_FMT_RGB24,
+		.detect	= detect_hdmi,
+		.enable	= enable_hdmi,
+		.mode	= {
+			.name		= "HDMI",
+			.refresh	= 60,
+			.xres		= 1024,
+			.yres		= 768,
+			.pixclock	= 15384,
+			.left_margin	= 220,
+			.right_margin	= 40,
+			.upper_margin	= 21,
+			.lower_margin	= 7,
+			.hsync_len	= 60,
+			.vsync_len	= 10,
+			.sync		= FB_SYNC_EXT,
+			.vmode		= FB_VMODE_NONINTERLACED
+		},
+	},
+};
+
+size_t display_count = ARRAY_SIZE(displays);
+
+void setup_display_clock(void)
+{
+	struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+	struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
+
+	enable_ipu_clock();
+	imx_setup_hdmi();
+
+	/* Turn on LDB0,IPU,IPU DI0 clocks */
+	setbits_le32(&mxc_ccm->CCGR3, MXC_CCM_CCGR3_LDB_DI0_MASK);
+
+	/* set LDB0, LDB1 clk select to 011/011 */
+	clrsetbits_le32(&mxc_ccm->cs2cdr,
+			MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK |
+			MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK,
+			(3 << MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET) |
+			(3 << MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_OFFSET));
+
+	setbits_le32(&mxc_ccm->cscmr2, MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV);
+
+	setbits_le32(&mxc_ccm->chsccdr, CHSCCDR_CLK_SEL_LDB_DI0 <<
+		     MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
+
+	writel(IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES |
+	       IOMUXC_GPR2_DI1_VS_POLARITY_ACTIVE_HIGH |
+	       IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_LOW |
+	       IOMUXC_GPR2_BIT_MAPPING_CH1_SPWG |
+	       IOMUXC_GPR2_DATA_WIDTH_CH1_18BIT |
+	       IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG |
+	       IOMUXC_GPR2_DATA_WIDTH_CH0_18BIT |
+	       IOMUXC_GPR2_LVDS_CH1_MODE_DISABLED |
+	       IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0,
+	       &iomux->gpr[2]);
+
+	clrsetbits_le32(&iomux->gpr[3], IOMUXC_GPR3_LVDS0_MUX_CTL_MASK,
+			IOMUXC_GPR3_MUX_SRC_IPU1_DI0 <<
+			IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET);
+}
-- 
2.1.3

[U-Boot] [PATCH 7/8] arm: mx6: novena: Pull video handling into separate file

[Stefano Babic]

On 16/12/2014 14:09, Marek Vasut wrote:
> Pull all of the video handling into a separate file, since a lot
> more code will be added and such code would polute the board file.
> 
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Igor Grinberg <grinberg@compulab.co.il>
> Cc: Nikita Kiryanov <nikita@compulab.co.il>
> Cc: Sean Cross <xobs@kosagi.com>
> Cc: Simon Glass <sjg@chromium.org>
> Cc: Stefano Babic <sbabic@denx.de>
> Cc: Tim Harvey <tharvey@gateworks.com>
> ---


Applied to u-boot-imx, thanks !

Best regards,
Stefano Babic


-- 
=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de
=====================================================================

[U-Boot] [PATCH 8/8] arm: mx6: novena: Add proper LVDS display support

[Marek Vasut]

Repair the register configuration and add proper support for the
display attached to both LVDS channels.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Cc: Nikita Kiryanov <nikita@compulab.co.il>
Cc: Sean Cross <xobs@kosagi.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Tim Harvey <tharvey@gateworks.com>
---
 board/kosagi/novena/novena.c     |   8 +
 board/kosagi/novena/novena.h     |   8 +
 board/kosagi/novena/novena_spl.c |   7 +
 board/kosagi/novena/video.c      | 400 ++++++++++++++++++++++++++++++++++++---
 include/configs/novena.h         |   1 +
 5 files changed, 401 insertions(+), 23 deletions(-)

diff --git a/board/kosagi/novena/novena.c b/board/kosagi/novena/novena.c
index e7a6adb..69f5be3 100644
--- a/board/kosagi/novena/novena.c
+++ b/board/kosagi/novena/novena.c
@@ -173,6 +173,14 @@ int board_init(void)
 	return 0;
 }
 
+int board_late_init(void)
+{
+#if defined(CONFIG_VIDEO_IPUV3)
+	setup_display_lvds();
+#endif
+	return 0;
+}
+
 int checkboard(void)
 {
 	puts("Board: Novena 4x\n");
diff --git a/board/kosagi/novena/novena.h b/board/kosagi/novena/novena.h
index 244004d..8f11583 100644
--- a/board/kosagi/novena/novena.h
+++ b/board/kosagi/novena/novena.h
@@ -10,9 +10,12 @@
 #define __BOARD_KOSAGI_NOVENA_NOVENA_H__
 
 #define NOVENA_AUDIO_PWRON		IMX_GPIO_NR(5, 17)
+#define NOVENA_BACKLIGHT_PWM_GPIO	IMX_GPIO_NR(4, 29)
+#define NOVENA_BACKLIGHT_PWR_GPIO	IMX_GPIO_NR(4, 15)
 #define NOVENA_BUTTON_GPIO		IMX_GPIO_NR(4, 14)
 #define NOVENA_FPGA_RESET_N_GPIO	IMX_GPIO_NR(5, 7)
 #define NOVENA_HDMI_GHOST_HPD		IMX_GPIO_NR(5, 4)
+#define NOVENA_ITE6251_PWR_GPIO		IMX_GPIO_NR(5, 28)
 #define NOVENA_PCIE_DISABLE_GPIO	IMX_GPIO_NR(2, 16)
 #define NOVENA_PCIE_POWER_ON_GPIO	IMX_GPIO_NR(7, 12)
 #define NOVENA_PCIE_RESET_GPIO		IMX_GPIO_NR(3, 29)
@@ -20,6 +23,11 @@
 #define NOVENA_SD_CD			IMX_GPIO_NR(1, 4)
 #define NOVENA_SD_WP			IMX_GPIO_NR(1, 2)
 
+#define NOVENA_IT6251_I2C_BUS	2
+#define NOVENA_IT6251_CHIPADDR	0x5c
+#define NOVENA_IT6251_LVDSADDR	0x5e
+
 void setup_display_clock(void);
+void setup_display_lvds(void);
 
 #endif	/* __BOARD_KOSAGI_NOVENA_NOVENA_H__ */
diff --git a/board/kosagi/novena/novena_spl.c b/board/kosagi/novena/novena_spl.c
index 5ebc59b..b1688e0 100644
--- a/board/kosagi/novena/novena_spl.c
+++ b/board/kosagi/novena/novena_spl.c
@@ -386,6 +386,13 @@ static void novena_spl_setup_iomux_uart(void)
 static iomux_v3_cfg_t hdmi_pads[] = {
 	/* "Ghost HPD" pin */
 	MX6_PAD_EIM_A24__GPIO5_IO04 | MUX_PAD_CTRL(NO_PAD_CTRL),
+
+	/* LCD_PWR_CTL */
+	MX6_PAD_CSI0_DAT10__GPIO5_IO28 | MUX_PAD_CTRL(NO_PAD_CTRL),
+	/* LCD_BL_ON */
+	MX6_PAD_KEY_ROW4__GPIO4_IO15 | MUX_PAD_CTRL(NO_PAD_CTRL),
+	/* GPIO_PWM1 */
+	MX6_PAD_DISP0_DAT8__GPIO4_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL),
 };
 
 static void novena_spl_setup_iomux_video(void)
diff --git a/board/kosagi/novena/video.c b/board/kosagi/novena/video.c
index fdcd100..6e9fd7d 100644
--- a/board/kosagi/novena/video.c
+++ b/board/kosagi/novena/video.c
@@ -1,6 +1,10 @@
 /*
  * Novena video output support
  *
+ * IT6251 code based on code Copyright (C) 2014 Sean Cross
+ * from https://github.com/xobs/novena-linux.git commit
+ * 3d85836ee1377d445531928361809612aa0a18db
+ *
  * Copyright (C) 2014 Marek Vasut <marex@denx.de>
  *
  * SPDX-License-Identifier:	GPL-2.0+
@@ -29,11 +33,275 @@
 
 #include "novena.h"
 
+#define IT6251_VENDOR_ID_LOW				0x00
+#define IT6251_VENDOR_ID_HIGH				0x01
+#define IT6251_DEVICE_ID_LOW				0x02
+#define IT6251_DEVICE_ID_HIGH				0x03
+#define IT6251_SYSTEM_STATUS				0x0d
+#define IT6251_SYSTEM_STATUS_RINTSTATUS			(1 << 0)
+#define IT6251_SYSTEM_STATUS_RHPDSTATUS			(1 << 1)
+#define IT6251_SYSTEM_STATUS_RVIDEOSTABLE		(1 << 2)
+#define IT6251_SYSTEM_STATUS_RPLL_IOLOCK		(1 << 3)
+#define IT6251_SYSTEM_STATUS_RPLL_XPLOCK		(1 << 4)
+#define IT6251_SYSTEM_STATUS_RPLL_SPLOCK		(1 << 5)
+#define IT6251_SYSTEM_STATUS_RAUXFREQ_LOCK		(1 << 6)
+#define IT6251_REF_STATE				0x0e
+#define IT6251_REF_STATE_MAIN_LINK_DISABLED		(1 << 0)
+#define IT6251_REF_STATE_AUX_CHANNEL_READ		(1 << 1)
+#define IT6251_REF_STATE_CR_PATTERN			(1 << 2)
+#define IT6251_REF_STATE_EQ_PATTERN			(1 << 3)
+#define IT6251_REF_STATE_NORMAL_OPERATION		(1 << 4)
+#define IT6251_REF_STATE_MUTED				(1 << 5)
+
+#define IT6251_REG_PCLK_CNT_LOW				0x57
+#define IT6251_REG_PCLK_CNT_HIGH			0x58
+
+#define IT6521_RETRY_MAX				20
+
+static int it6251_is_stable(void)
+{
+	const unsigned int caddr = NOVENA_IT6251_CHIPADDR;
+	const unsigned int laddr = NOVENA_IT6251_LVDSADDR;
+	int status;
+	int clkcnt;
+	int rpclkcnt;
+	int refstate;
+
+	rpclkcnt = (i2c_reg_read(caddr, 0x13) & 0xff) |
+		   ((i2c_reg_read(caddr, 0x14) << 8) & 0x0f00);
+	debug("RPCLKCnt: %d\n", rpclkcnt);
+
+	status = i2c_reg_read(caddr, IT6251_SYSTEM_STATUS);
+	debug("System status: 0x%02x\n", status);
+
+	clkcnt = (i2c_reg_read(laddr, IT6251_REG_PCLK_CNT_LOW) & 0xff) |
+		 ((i2c_reg_read(laddr, IT6251_REG_PCLK_CNT_HIGH) << 8) & 0x0f00);
+	debug("Clock: 0x%02x\n", clkcnt);
+
+	refstate = i2c_reg_read(laddr, IT6251_REF_STATE);
+	debug("Ref Link State: 0x%02x\n", refstate);
+
+	if ((refstate & 0x1f) != 0)
+		return 0;
+
+	/* If video is muted, that's a failure */
+	if (refstate & IT6251_REF_STATE_MUTED)
+		return 0;
+
+	if (!(status & IT6251_SYSTEM_STATUS_RVIDEOSTABLE))
+		return 0;
+
+	return 1;
+}
+
+static int it6251_ready(void)
+{
+	const unsigned int caddr = NOVENA_IT6251_CHIPADDR;
+
+	/* Test if the IT6251 came out of reset by reading ID regs. */
+	if (i2c_reg_read(caddr, IT6251_VENDOR_ID_LOW) != 0x15)
+		return 0;
+	if (i2c_reg_read(caddr, IT6251_VENDOR_ID_HIGH) != 0xca)
+		return 0;
+	if (i2c_reg_read(caddr, IT6251_DEVICE_ID_LOW) != 0x51)
+		return 0;
+	if (i2c_reg_read(caddr, IT6251_DEVICE_ID_HIGH) != 0x62)
+		return 0;
+
+	return 1;
+}
+
+static void it6251_program_regs(void)
+{
+	const unsigned int caddr = NOVENA_IT6251_CHIPADDR;
+	const unsigned int laddr = NOVENA_IT6251_LVDSADDR;
+
+	i2c_reg_write(caddr, 0x05, 0x00);
+	mdelay(1);
+
+	/* set LVDSRX address, and enable */
+	i2c_reg_write(caddr, 0xfd, 0xbc);
+	i2c_reg_write(caddr, 0xfe, 0x01);
+
+	/*
+	 * LVDSRX
+	 */
+	/* This write always fails, because the chip goes into reset */
+	/* reset LVDSRX */
+	i2c_reg_write(laddr, 0x05, 0xff);
+	i2c_reg_write(laddr, 0x05, 0x00);
+
+	/* reset LVDSRX PLL */
+	i2c_reg_write(laddr, 0x3b, 0x42);
+	i2c_reg_write(laddr, 0x3b, 0x43);
+
+	/* something with SSC PLL */
+	i2c_reg_write(laddr, 0x3c, 0x08);
+	/* don't swap links, but writing reserved registers */
+	i2c_reg_write(laddr, 0x0b, 0x88);
+
+	/* JEIDA, 8-bit depth  0x11, orig 0x42 */
+	i2c_reg_write(laddr, 0x2c, 0x01);
+	/* "reserved" */
+	i2c_reg_write(laddr, 0x32, 0x04);
+	/* "reserved" */
+	i2c_reg_write(laddr, 0x35, 0xe0);
+	/* "reserved" + clock delay */
+	i2c_reg_write(laddr, 0x2b, 0x24);
+
+	/* reset LVDSRX pix clock */
+	i2c_reg_write(laddr, 0x05, 0x02);
+	i2c_reg_write(laddr, 0x05, 0x00);
+
+	/*
+	 * DPTX
+	 */
+	/* set for two lane mode, normal op, no swapping, no downspread */
+	i2c_reg_write(caddr, 0x16, 0x02);
+
+	/* some AUX channel EDID magic */
+	i2c_reg_write(caddr, 0x23, 0x40);
+
+	/* power down lanes 3-0 */
+	i2c_reg_write(caddr, 0x5c, 0xf3);
+
+	/* enable DP scrambling, change EQ CR phase */
+	i2c_reg_write(caddr, 0x5f, 0x06);
+
+	/* color mode RGB, pclk/2 */
+	i2c_reg_write(caddr, 0x60, 0x02);
+	/* dual pixel input mode, no EO swap, no RGB swap */
+	i2c_reg_write(caddr, 0x61, 0x04);
+	/* M444B24 video format */
+	i2c_reg_write(caddr, 0x62, 0x01);
+
+	// vesa range / not interlace / vsync high / hsync high
+	i2c_reg_write(caddr, 0xa0, 0x0F);
+
+	/* hpd event timer set to 1.6-ish ms */
+	i2c_reg_write(caddr, 0xc9, 0xf5);
+
+	/* more reserved magic */
+	i2c_reg_write(caddr, 0xca, 0x4d);
+	i2c_reg_write(caddr, 0xcb, 0x37);
+
+	/* enhanced framing mode, auto video fifo reset, video mute disable */
+	i2c_reg_write(caddr, 0xd3, 0x03);
+
+	/* "vidstmp" and some reserved stuff */
+	i2c_reg_write(caddr, 0xd4, 0x45);
+
+	/* queue number -- reserved */
+	i2c_reg_write(caddr, 0xe7, 0xa0);
+	/* info frame packets  and reserved */
+	i2c_reg_write(caddr, 0xe8, 0x33);
+	/* more AVI stuff */
+	i2c_reg_write(caddr, 0xec, 0x00);
+
+	/* select PC master reg for aux channel? */
+	i2c_reg_write(caddr, 0x23, 0x42);
+
+	/* send PC request commands */
+	i2c_reg_write(caddr, 0x24, 0x00);
+	i2c_reg_write(caddr, 0x25, 0x00);
+	i2c_reg_write(caddr, 0x26, 0x00);
+
+	/* native aux read */
+	i2c_reg_write(caddr, 0x2b, 0x00);
+	/* back to internal */
+	i2c_reg_write(caddr, 0x23, 0x40);
+
+	/* voltage swing level 3 */
+	i2c_reg_write(caddr, 0x19, 0xff);
+	/* pre-emphasis level 3 */
+	i2c_reg_write(caddr, 0x1a, 0xff);
+
+	/* start link training */
+	i2c_reg_write(caddr, 0x17, 0x01);
+}
+
+static int it6251_init(void)
+{
+	const unsigned int caddr = NOVENA_IT6251_CHIPADDR;
+	int reg;
+	int tries, retries = 0;
+
+	for (retries = 0; retries < IT6521_RETRY_MAX; retries++) {
+
+		/* Program the chip. */
+		it6251_program_regs();
+
+		/* Wait for video stable. */
+		for (tries = 0; tries < 100; tries++) {
+			reg = i2c_reg_read(caddr, 0x17);
+			/* Test Link CFG, STS, LCS read done. */
+			if ((reg & 0xe0) != 0xe0) {
+				/* Not yet, wait a bit more. */
+				mdelay(2);
+				continue;
+			}
+
+			/* Test if the video input is stable. */
+			if (it6251_is_stable())
+				return 0;
+		}
+		/*
+		 * If we couldn't stabilize, requeue and try again,
+		 * because it means that the LVDS channel isn't
+		 * stable yet.
+		 */
+		printf("Display didn't stabilize.\n");
+		printf("This may be because the LVDS port is still in powersave mode.\n");
+		mdelay(50);
+	}
+
+	return -EINVAL;
+}
+
 static void enable_hdmi(struct display_info_t const *dev)
 {
 	imx_enable_hdmi_phy();
 }
 
+static int lvds_enabled;
+
+static void enable_lvds(struct display_info_t const *dev)
+{
+	if (lvds_enabled)
+		return;
+
+	/* ITE IT6251 power enable. */
+	gpio_direction_output(NOVENA_ITE6251_PWR_GPIO, 0);
+	mdelay(10);
+	gpio_direction_output(NOVENA_ITE6251_PWR_GPIO, 1);
+	mdelay(20);
+	lvds_enabled = 1;
+}
+
+static int detect_lvds(struct display_info_t const *dev)
+{
+	int ret, loops = 250;
+
+	enable_lvds(dev);
+
+	ret = i2c_set_bus_num(NOVENA_IT6251_I2C_BUS);
+	if (ret) {
+		puts("Cannot select IT6251 I2C bus.\n");
+		return 0;
+	}
+
+	/* Wait up-to ~250 mS for the LVDS to come up. */
+	while (--loops) {
+		ret = it6251_ready();
+		if (ret)
+			return ret;
+
+		mdelay(1);
+	}
+
+	return 0;
+}
+
 struct display_info_t const displays[] = {
 	{
 		/* HDMI Output */
@@ -57,46 +325,132 @@ struct display_info_t const displays[] = {
 			.sync		= FB_SYNC_EXT,
 			.vmode		= FB_VMODE_NONINTERLACED
 		},
+	}, {
+		/* LVDS Output: N133HSE-EA1 Rev. C1 */
+		.bus	= -1,
+		.pixfmt	= IPU_PIX_FMT_RGB24,
+		.detect	= detect_lvds,
+		.enable	= enable_lvds,
+		.mode	= {
+			.name		= "Chimei-FHD",
+			.refresh	= 60,
+			.xres		= 1920,
+			.yres		= 1080,
+			.pixclock	= 15384,
+			.left_margin	= 148,
+			.right_margin	= 88,
+			.upper_margin	= 36,
+			.lower_margin	= 4,
+			.hsync_len	= 44,
+			.vsync_len	= 5,
+			.sync		= FB_SYNC_HOR_HIGH_ACT |
+					  FB_SYNC_VERT_HIGH_ACT |
+					  FB_SYNC_EXT,
+			.vmode		= FB_VMODE_NONINTERLACED,
+		},
 	},
 };
 
 size_t display_count = ARRAY_SIZE(displays);
 
+static void enable_vpll(void)
+{
+	struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+	int timeout = 100000;
+
+	setbits_le32(&ccm->analog_pll_video, BM_ANADIG_PLL_VIDEO_POWERDOWN);
+
+	clrsetbits_le32(&ccm->analog_pll_video,
+			BM_ANADIG_PLL_VIDEO_DIV_SELECT |
+			BM_ANADIG_PLL_VIDEO_POST_DIV_SELECT,
+			BF_ANADIG_PLL_VIDEO_DIV_SELECT(37) |
+			BF_ANADIG_PLL_VIDEO_POST_DIV_SELECT(1));
+
+	writel(BF_ANADIG_PLL_VIDEO_NUM_A(11), &ccm->analog_pll_video_num);
+	writel(BF_ANADIG_PLL_VIDEO_DENOM_B(12), &ccm->analog_pll_video_denom);
+
+	clrbits_le32(&ccm->analog_pll_video, BM_ANADIG_PLL_VIDEO_POWERDOWN);
+
+	while (timeout--)
+		if (readl(&ccm->analog_pll_video) & BM_ANADIG_PLL_VIDEO_LOCK)
+			break;
+	if (timeout < 0)
+		printf("Warning: video pll lock timeout!\n");
+
+	clrsetbits_le32(&ccm->analog_pll_video,
+			BM_ANADIG_PLL_VIDEO_BYPASS,
+			BM_ANADIG_PLL_VIDEO_ENABLE);
+}
+
 void setup_display_clock(void)
 {
 	struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 	struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
 
 	enable_ipu_clock();
+	enable_vpll();
 	imx_setup_hdmi();
 
-	/* Turn on LDB0,IPU,IPU DI0 clocks */
+	/* Turn on IPU LDB DI0 clocks */
 	setbits_le32(&mxc_ccm->CCGR3, MXC_CCM_CCGR3_LDB_DI0_MASK);
 
-	/* set LDB0, LDB1 clk select to 011/011 */
+	/* Switch LDB DI0 to PLL5 (Video PLL) */
 	clrsetbits_le32(&mxc_ccm->cs2cdr,
-			MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK |
-			MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK,
-			(3 << MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET) |
-			(3 << MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_OFFSET));
-
-	setbits_le32(&mxc_ccm->cscmr2, MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV);
-
-	setbits_le32(&mxc_ccm->chsccdr, CHSCCDR_CLK_SEL_LDB_DI0 <<
-		     MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
-
-	writel(IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES |
-	       IOMUXC_GPR2_DI1_VS_POLARITY_ACTIVE_HIGH |
-	       IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_LOW |
-	       IOMUXC_GPR2_BIT_MAPPING_CH1_SPWG |
-	       IOMUXC_GPR2_DATA_WIDTH_CH1_18BIT |
-	       IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG |
-	       IOMUXC_GPR2_DATA_WIDTH_CH0_18BIT |
-	       IOMUXC_GPR2_LVDS_CH1_MODE_DISABLED |
+			MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK,
+			(0 << MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET));
+
+	/* LDB clock div by 3.5 */
+	clrbits_le32(&mxc_ccm->cscmr2, MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV);
+
+	/* DI0 clock derived from ldb_di0_clk */
+	clrsetbits_le32(&mxc_ccm->chsccdr,
+			MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_MASK,
+			(CHSCCDR_CLK_SEL_LDB_DI0 <<
+			 MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET)
+			);
+
+	/* Enable both LVDS channels, both connected to DI0. */
+	writel(IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_HIGH |
+	       IOMUXC_GPR2_BIT_MAPPING_CH1_JEIDA |
+	       IOMUXC_GPR2_DATA_WIDTH_CH1_24BIT |
+	       IOMUXC_GPR2_BIT_MAPPING_CH0_JEIDA |
+	       IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT |
+	       IOMUXC_GPR2_SPLIT_MODE_EN_MASK |
+	       IOMUXC_GPR2_LVDS_CH1_MODE_ENABLED_DI0 |
 	       IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0,
 	       &iomux->gpr[2]);
 
-	clrsetbits_le32(&iomux->gpr[3], IOMUXC_GPR3_LVDS0_MUX_CTL_MASK,
-			IOMUXC_GPR3_MUX_SRC_IPU1_DI0 <<
-			IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET);
+	clrsetbits_le32(&iomux->gpr[3],
+			IOMUXC_GPR3_LVDS0_MUX_CTL_MASK |
+			IOMUXC_GPR3_LVDS1_MUX_CTL_MASK,
+			(IOMUXC_GPR3_MUX_SRC_IPU1_DI0 <<
+			 IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET) |
+			(IOMUXC_GPR3_MUX_SRC_IPU1_DI0 <<
+			 IOMUXC_GPR3_LVDS1_MUX_CTL_OFFSET)
+			);
+}
+
+void setup_display_lvds(void)
+{
+	int ret;
+
+	ret = i2c_set_bus_num(NOVENA_IT6251_I2C_BUS);
+	if (ret) {
+		puts("Cannot select LVDS-to-eDP I2C bus.\n");
+		return;
+	}
+
+	/* The IT6251 should be ready now, if it's not, it's not connected. */
+	ret = it6251_ready();
+	if (!ret)
+		return;
+
+	/* Init the LVDS-to-eDP chip and if it succeeded, enable backlight. */
+	ret = it6251_init();
+	if (!ret) {
+		/* Backlight power enable. */
+		gpio_direction_output(NOVENA_BACKLIGHT_PWR_GPIO, 1);
+		/* PWM backlight pin, always on for full brightness. */
+		gpio_direction_output(NOVENA_BACKLIGHT_PWM_GPIO, 1);
+	}
 }
diff --git a/include/configs/novena.h b/include/configs/novena.h
index 4924cbf..ea75d2c 100644
--- a/include/configs/novena.h
+++ b/include/configs/novena.h
@@ -12,6 +12,7 @@
 /* System configurations */
 #define CONFIG_MX6
 #define CONFIG_BOARD_EARLY_INIT_F
+#define CONFIG_BOARD_LATE_INIT
 #define CONFIG_MISC_INIT_R
 #define CONFIG_DISPLAY_BOARDINFO
 #define CONFIG_DISPLAY_CPUINFO
-- 
2.1.3

[U-Boot] [PATCH 8/8] arm: mx6: novena: Add proper LVDS display support

[Simon Glass]

Hi Marek,

On 16 December 2014 at 06:09, Marek Vasut <marex@denx.de> wrote:
> Repair the register configuration and add proper support for the
> display attached to both LVDS channels.
>
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Igor Grinberg <grinberg@compulab.co.il>
> Cc: Nikita Kiryanov <nikita@compulab.co.il>
> Cc: Sean Cross <xobs@kosagi.com>
> Cc: Simon Glass <sjg@chromium.org>
> Cc: Stefano Babic <sbabic@denx.de>
> Cc: Tim Harvey <tharvey@gateworks.com>
> ---
>  board/kosagi/novena/novena.c     |   8 +
>  board/kosagi/novena/novena.h     |   8 +
>  board/kosagi/novena/novena_spl.c |   7 +
>  board/kosagi/novena/video.c      | 400 ++++++++++++++++++++++++++++++++++++---
>  include/configs/novena.h         |   1 +
>  5 files changed, 401 insertions(+), 23 deletions(-)

Could perhaps move the board to driver model for I2C.

Regards,
Simon

[U-Boot] [PATCH 8/8] arm: mx6: novena: Add proper LVDS display support

[Marek Vasut]

On Tuesday, December 16, 2014 at 05:22:31 PM, Simon Glass wrote:
> Hi Marek,
> 
> On 16 December 2014 at 06:09, Marek Vasut <marex@denx.de> wrote:
> > Repair the register configuration and add proper support for the
> > display attached to both LVDS channels.
> > 
> > Signed-off-by: Marek Vasut <marex@denx.de>
> > Cc: Igor Grinberg <grinberg@compulab.co.il>
> > Cc: Nikita Kiryanov <nikita@compulab.co.il>
> > Cc: Sean Cross <xobs@kosagi.com>
> > Cc: Simon Glass <sjg@chromium.org>
> > Cc: Stefano Babic <sbabic@denx.de>
> > Cc: Tim Harvey <tharvey@gateworks.com>
> > ---
> > 
> >  board/kosagi/novena/novena.c     |   8 +
> >  board/kosagi/novena/novena.h     |   8 +
> >  board/kosagi/novena/novena_spl.c |   7 +
> >  board/kosagi/novena/video.c      | 400
> >  ++++++++++++++++++++++++++++++++++++--- include/configs/novena.h       
> >   |   1 +
> >  5 files changed, 401 insertions(+), 23 deletions(-)
> 
> Could perhaps move the board to driver model for I2C.

That's the plan, not only this one, but SoCFPGA in general and all the DENX 
boards.

Best regards,
Marek Vasut

[U-Boot] [PATCH 8/8] arm: mx6: novena: Add proper LVDS display support

[Stefano Babic]

On 16/12/2014 14:09, Marek Vasut wrote:
> Repair the register configuration and add proper support for the
> display attached to both LVDS channels.
> 
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Igor Grinberg <grinberg@compulab.co.il>
> Cc: Nikita Kiryanov <nikita@compulab.co.il>
> Cc: Sean Cross <xobs@kosagi.com>
> Cc: Simon Glass <sjg@chromium.org>
> Cc: Stefano Babic <sbabic@denx.de>
> Cc: Tim Harvey <tharvey@gateworks.com>
> ---

After fixing checkpatch warnings:

Applied to u-boot-imx, thanks !

Best regards,
Stefano Babic

-- 
=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de
=====================================================================

[U-Boot] [PATCH 1/8] imx: i2c: Zap unnecessary malloc() calls

[Christian Gmeiner]

2014-12-16 14:09 GMT+01:00 Marek Vasut <marex@denx.de>:
> The malloc() calls are unnecessary, just allocate the stuff on stack.
> While at it, reorder the code a little, so that only one variable is
> used for the text, use snprintf() instead of sprintf() and use %01d
> as a formatting string to avoid any possible overflows.
>
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Igor Grinberg <grinberg@compulab.co.il>
> Cc: Nikita Kiryanov <nikita@compulab.co.il>
> Cc: Sean Cross <xobs@kosagi.com>
> Cc: Simon Glass <sjg@chromium.org>
> Cc: Stefano Babic <sbabic@denx.de>
> Cc: Tim Harvey <tharvey@gateworks.com>
> ---
>  arch/arm/imx-common/i2c-mxv7.c | 24 ++++++++----------------
>  1 file changed, 8 insertions(+), 16 deletions(-)
>
> diff --git a/arch/arm/imx-common/i2c-mxv7.c b/arch/arm/imx-common/i2c-mxv7.c
> index 34f5387..1a632e7 100644
> --- a/arch/arm/imx-common/i2c-mxv7.c
> +++ b/arch/arm/imx-common/i2c-mxv7.c
> @@ -73,26 +73,21 @@ static void * const i2c_bases[] = {
>  int setup_i2c(unsigned i2c_index, int speed, int slave_addr,
>               struct i2c_pads_info *p)
>  {
> -       char *name1, *name2;
> +       char name[9];
>         int ret;
>
>         if (i2c_index >= ARRAY_SIZE(i2c_bases))
>                 return -EINVAL;
>
> -       name1 = malloc(9);
> -       name2 = malloc(9);
> -       if (!name1 || !name2)
> -               return -ENOMEM;
> -
> -       sprintf(name1, "i2c_sda%d", i2c_index);
> -       sprintf(name2, "i2c_scl%d", i2c_index);
> -       ret = gpio_request(p->sda.gp, name1);
> +       snprintf(name, sizeof(name), "i2c_sda%01d", i2c_index);
> +       ret = gpio_request(p->sda.gp, name);
>         if (ret)
> -               goto err_req1;
> +               return ret;
>
> -       ret = gpio_request(p->scl.gp, name2);
> +       snprintf(name, sizeof(name), "i2c_scl%01d", i2c_index);
> +       ret = gpio_request(p->scl.gp, name);
>         if (ret)
> -               goto err_req2;
> +               goto err_req;
>
>         /* Enable i2c clock */
>         ret = enable_i2c_clk(1, i2c_index);
> @@ -112,11 +107,8 @@ int setup_i2c(unsigned i2c_index, int speed, int slave_addr,
>  err_idle:
>  err_clk:
>         gpio_free(p->scl.gp);
> -err_req2:
> +err_req:
>         gpio_free(p->sda.gp);
> -err_req1:
> -       free(name1);
> -       free(name2);
>
>         return ret;
>  }
> --
> 2.1.3
>

Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>

[U-Boot] [PATCH 1/8] imx: i2c: Zap unnecessary malloc() calls

[Simon Glass]

Hi Marek,

On 16 December 2014 at 06:09, Marek Vasut <marex@denx.de> wrote:
> The malloc() calls are unnecessary, just allocate the stuff on stack.
> While at it, reorder the code a little, so that only one variable is
> used for the text, use snprintf() instead of sprintf() and use %01d
> as a formatting string to avoid any possible overflows.
>
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Igor Grinberg <grinberg@compulab.co.il>
> Cc: Nikita Kiryanov <nikita@compulab.co.il>
> Cc: Sean Cross <xobs@kosagi.com>
> Cc: Simon Glass <sjg@chromium.org>
> Cc: Stefano Babic <sbabic@denx.de>
> Cc: Tim Harvey <tharvey@gateworks.com>
> ---
>  arch/arm/imx-common/i2c-mxv7.c | 24 ++++++++----------------
>  1 file changed, 8 insertions(+), 16 deletions(-)
>
> diff --git a/arch/arm/imx-common/i2c-mxv7.c b/arch/arm/imx-common/i2c-mxv7.c
> index 34f5387..1a632e7 100644
> --- a/arch/arm/imx-common/i2c-mxv7.c
> +++ b/arch/arm/imx-common/i2c-mxv7.c
> @@ -73,26 +73,21 @@ static void * const i2c_bases[] = {
>  int setup_i2c(unsigned i2c_index, int speed, int slave_addr,
>               struct i2c_pads_info *p)
>  {
> -       char *name1, *name2;
> +       char name[9];
>         int ret;
>
>         if (i2c_index >= ARRAY_SIZE(i2c_bases))
>                 return -EINVAL;
>
> -       name1 = malloc(9);
> -       name2 = malloc(9);
> -       if (!name1 || !name2)
> -               return -ENOMEM;
> -
> -       sprintf(name1, "i2c_sda%d", i2c_index);
> -       sprintf(name2, "i2c_scl%d", i2c_index);
> -       ret = gpio_request(p->sda.gp, name1);
> +       snprintf(name, sizeof(name), "i2c_sda%01d", i2c_index);
> +       ret = gpio_request(p->sda.gp, name);

Does this board use driver model? If not it should be easy to convert
since one MX6 board supports it. With driver model there is
gpio_requestf("i2c_sda%01d", i2c_index);

>         if (ret)
> -               goto err_req1;
> +               return ret;
>
> -       ret = gpio_request(p->scl.gp, name2);
> +       snprintf(name, sizeof(name), "i2c_scl%01d", i2c_index);
> +       ret = gpio_request(p->scl.gp, name);
>         if (ret)
> -               goto err_req2;
> +               goto err_req;
>
>         /* Enable i2c clock */
>         ret = enable_i2c_clk(1, i2c_index);
> @@ -112,11 +107,8 @@ int setup_i2c(unsigned i2c_index, int speed, int slave_addr,
>  err_idle:
>  err_clk:
>         gpio_free(p->scl.gp);
> -err_req2:
> +err_req:
>         gpio_free(p->sda.gp);
> -err_req1:
> -       free(name1);
> -       free(name2);
>
>         return ret;
>  }
> --
> 2.1.3
>

Regards,
Simon

[U-Boot] [PATCH 1/8] imx: i2c: Zap unnecessary malloc() calls

[Marek Vasut]

On Tuesday, December 16, 2014 at 05:27:53 PM, Simon Glass wrote:
> Hi Marek,
> 
> On 16 December 2014 at 06:09, Marek Vasut <marex@denx.de> wrote:
> > The malloc() calls are unnecessary, just allocate the stuff on stack.
> > While at it, reorder the code a little, so that only one variable is
> > used for the text, use snprintf() instead of sprintf() and use %01d
> > as a formatting string to avoid any possible overflows.
> > 
> > Signed-off-by: Marek Vasut <marex@denx.de>
> > Cc: Igor Grinberg <grinberg@compulab.co.il>
> > Cc: Nikita Kiryanov <nikita@compulab.co.il>
> > Cc: Sean Cross <xobs@kosagi.com>
> > Cc: Simon Glass <sjg@chromium.org>
> > Cc: Stefano Babic <sbabic@denx.de>
> > Cc: Tim Harvey <tharvey@gateworks.com>
> > ---
> > 
> >  arch/arm/imx-common/i2c-mxv7.c | 24 ++++++++----------------
> >  1 file changed, 8 insertions(+), 16 deletions(-)
> > 
> > diff --git a/arch/arm/imx-common/i2c-mxv7.c
> > b/arch/arm/imx-common/i2c-mxv7.c index 34f5387..1a632e7 100644
> > --- a/arch/arm/imx-common/i2c-mxv7.c
> > +++ b/arch/arm/imx-common/i2c-mxv7.c
> > @@ -73,26 +73,21 @@ static void * const i2c_bases[] = {
> > 
> >  int setup_i2c(unsigned i2c_index, int speed, int slave_addr,
> >  
> >               struct i2c_pads_info *p)
> >  
> >  {
> > 
> > -       char *name1, *name2;
> > +       char name[9];
> > 
> >         int ret;
> >         
> >         if (i2c_index >= ARRAY_SIZE(i2c_bases))
> >         
> >                 return -EINVAL;
> > 
> > -       name1 = malloc(9);
> > -       name2 = malloc(9);
> > -       if (!name1 || !name2)
> > -               return -ENOMEM;
> > -
> > -       sprintf(name1, "i2c_sda%d", i2c_index);
> > -       sprintf(name2, "i2c_scl%d", i2c_index);
> > -       ret = gpio_request(p->sda.gp, name1);
> > +       snprintf(name, sizeof(name), "i2c_sda%01d", i2c_index);
> > +       ret = gpio_request(p->sda.gp, name);
> 
> Does this board use driver model? If not it should be easy to convert
> since one MX6 board supports it. With driver model there is
> gpio_requestf("i2c_sda%01d", i2c_index);

No, not yet, but it's in the pipeline. I am already keeping an eye on a few
conversion patches to get this done.

[U-Boot] [PATCH 1/8] imx: i2c: Zap unnecessary malloc() calls

[Stefano Babic]

On 16/12/2014 14:09, Marek Vasut wrote:
> The malloc() calls are unnecessary, just allocate the stuff on stack.
> While at it, reorder the code a little, so that only one variable is
> used for the text, use snprintf() instead of sprintf() and use %01d
> as a formatting string to avoid any possible overflows.
> 
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Igor Grinberg <grinberg@compulab.co.il>
> Cc: Nikita Kiryanov <nikita@compulab.co.il>
> Cc: Sean Cross <xobs@kosagi.com>
> Cc: Simon Glass <sjg@chromium.org>
> Cc: Stefano Babic <sbabic@denx.de>
> Cc: Tim Harvey <tharvey@gateworks.com>
> ---


Applied to u-boot-imx, thanks !

Best regards,
Stefano Babic


-- 
=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de
=====================================================================

[U-Boot] [PATCH 1/8] imx: i2c: Zap unnecessary malloc() calls

[Marek Vasut]

On Tuesday, December 30, 2014 at 02:34:47 PM, Stefano Babic wrote:
> On 16/12/2014 14:09, Marek Vasut wrote:
> > The malloc() calls are unnecessary, just allocate the stuff on stack.
> > While at it, reorder the code a little, so that only one variable is
> > used for the text, use snprintf() instead of sprintf() and use %01d
> > as a formatting string to avoid any possible overflows.
> > 
> > Signed-off-by: Marek Vasut <marex@denx.de>
> > Cc: Igor Grinberg <grinberg@compulab.co.il>
> > Cc: Nikita Kiryanov <nikita@compulab.co.il>
> > Cc: Sean Cross <xobs@kosagi.com>
> > Cc: Simon Glass <sjg@chromium.org>
> > Cc: Stefano Babic <sbabic@denx.de>
> > Cc: Tim Harvey <tharvey@gateworks.com>
> > ---
> 
> Applied to u-boot-imx, thanks !

Hey!

hope you had a nice holiday :) You might want to apply 2/8 and 3/8 to current 
codebase and send it to Tom, since they fix real problem and the board doesn't
boot without this. I should have separated them out, sorry.

Best regards,
Marek Vasut