1 files changed, 103 insertions, 0 deletions

diff --git a/extras/recipes-kernel/linux/linux-omap-psp-2.6.32/cam/0023-omap3beagle-camera-Fix-powerup-sequence.patch b/extras/recipes-kernel/linux/linux-omap-psp-2.6.32/cam/0023-omap3beagle-camera-Fix-powerup-sequence.patch
new file mode 100644
index 00000000..052b9152
--- /dev/null
+++ b/extras/recipes-kernel/linux/linux-omap-psp-2.6.32/cam/0023-omap3beagle-camera-Fix-powerup-sequence.patch
@@ -0,0 +1,103 @@
+From e4f2c3641ccae2cb1614c8fda5ce307170b20921 Mon Sep 17 00:00:00 2001
+From: Sergio Aguirre <saaguirre@ti.com>
+Date: Thu, 24 Jun 2010 18:21:52 -0500
+Subject: [PATCH 23/75] omap3beagle: camera: Fix powerup sequence
+
+The powerup sequence was very incomplete. After revisiting the
+Aptina developer's guide, the resulting powerup sequence is followed.
+
+Signed-off-by: Sergio Aguirre <saaguirre@ti.com>
+---
+ arch/arm/mach-omap2/board-omap3beagle-camera.c |   49 ++++++++++++++++++++++--
+ 1 files changed, 45 insertions(+), 4 deletions(-)
+
+diff --git a/arch/arm/mach-omap2/board-omap3beagle-camera.c b/arch/arm/mach-omap2/board-omap3beagle-camera.c
+index 6babaf3..792c48d 100644
+--- a/arch/arm/mach-omap2/board-omap3beagle-camera.c
++++ b/arch/arm/mach-omap2/board-omap3beagle-camera.c
+@@ -51,6 +51,8 @@
+ 
+ #define ISP_MT9T111_MCLK               216000000
+ 
++#define LEOPARD_RESET_GPIO             98
++
+ static struct regulator *beagle_mt9t111_1_8v;
+ static struct regulator *beagle_mt9t111_2_8v;
+ 
+@@ -174,16 +176,42 @@ static int mt9t111_power_set(struct v4l2_int_device *s, enum v4l2_power power)
+                break;
+ 
+        case V4L2_POWER_ON:
+-               isp_set_xclk(vdev->cam->isp, MT9T111_CLK_MIN, CAM_USE_XCLKA);
+-
+ #if defined(CONFIG_VIDEO_OMAP3) || defined(CONFIG_VIDEO_OMAP3_MODULE)
+                isp_configure_interface(vdev->cam->isp, &mt9t111_if_config);
+ #endif
+ 
+-               /* turn on analog power */
++               /* Set RESET_BAR to 0 */
++               gpio_set_value(LEOPARD_RESET_GPIO, 0);
++
++               /* turn on VDD */
+                regulator_enable(beagle_mt9t111_1_8v);
++
++               mdelay(1);
++
++               /* turn on VDD_IO */
+                regulator_enable(beagle_mt9t111_2_8v);
+-               udelay(100);
++
++               mdelay(50);
++
++               /* Enable EXTCLK */
++               isp_set_xclk(vdev->cam->isp, MT9T111_CLK_MIN, CAM_USE_XCLKA);
++
++               /*
++                * Wait at least 70 CLK cycles (w/EXTCLK = 6MHz, or CLK_MIN):
++                * ((1000000 * 70) / 6000000) = aprox 12 us.
++                */
++
++               udelay(12);
++
++               /* Set RESET_BAR to 1 */
++               gpio_set_value(LEOPARD_RESET_GPIO, 1);
++
++               /*
++                * Wait at least 100 CLK cycles (w/EXTCLK = 6MHz, or CLK_MIN):
++                * ((1000000 * 100) / 6000000) = aprox 17 us.
++                */
++
++               udelay(17);
+ 
+                break;
+ 
+@@ -224,6 +252,17 @@ static int beagle_cam_probe(struct platform_device *pdev)
+                return PTR_ERR(beagle_mt9t111_2_8v);
+        }
+ 
++       if (gpio_request(LEOPARD_RESET_GPIO, "cam_rst") != 0) {
++               dev_err(&pdev->dev, "Could not request GPIO %d",
++                       LEOPARD_RESET_GPIO);
++               regulator_put(beagle_mt9t111_2_8v);
++               regulator_put(beagle_mt9t111_1_8v);
++               return -ENODEV;
++       }
++
++       /* set to output mode, default value 0 */
++       gpio_direction_output(LEOPARD_RESET_GPIO, 0);
++
+        printk(KERN_INFO MODULE_NAME ": Driver registration complete \n");
+ 
+        return 0;
+@@ -238,6 +277,8 @@ static int beagle_cam_remove(struct platform_device *pdev)
+                regulator_disable(beagle_mt9t111_2_8v);
+        regulator_put(beagle_mt9t111_2_8v);
+ 
++       gpio_free(LEOPARD_RESET_GPIO);
++
+        return 0;
+ }
+ 
+-- 
+1.6.6.1
+