1 files changed, 135 insertions, 0 deletions

diff --git a/extras/recipes-kernel/linux/linux-omap-psp-2.6.32/beagleboard-xmc/0001-omap-Beagle-revision-detection.patch b/extras/recipes-kernel/linux/linux-omap-psp-2.6.32/beagleboard-xmc/0001-omap-Beagle-revision-detection.patch
new file mode 100644
index 00000000..f29c9a6d
--- /dev/null
+++ b/extras/recipes-kernel/linux/linux-omap-psp-2.6.32/beagleboard-xmc/0001-omap-Beagle-revision-detection.patch
@@ -0,0 +1,135 @@
+From 325afc09116e11e28265b648ef33d8c0306c61f1 Mon Sep 17 00:00:00 2001
+From: Robert Nelson <robertcnelson@gmail.com>
+Date: Thu, 23 Sep 2010 18:22:47 -0700
+Subject: [PATCH 01/10] omap: Beagle: revision detection
+
+Due to the omap3530 ES3.0 Silicon being used on both the
+B5/B6 and C1/2/3 Beagle we can't use the cpu_is_omap34xx()
+routines to differentiate the Beagle Boards.
+
+However gpio pins 171,172,173 where setup for this prupose, so
+lets use them.
+
+Changes:
+for older U-Boot's, use omap_mux_init_gpio()
+keep Beagle Rev in board-omap3beagle.c
+gpio_free on gpio request failure
+
+Tested on Beagle Revisions: B5, C2, C4, and xMA
+
+Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
+Acked-by: Jarkko Nikula <jhnikula@gmail.com>
+Signed-off-by: Tony Lindgren <tony@atomide.com>
+---
+ arch/arm/mach-omap2/board-omap3beagle.c |   88 +++++++++++++++++++++++++++++++
+ 1 files changed, 88 insertions(+), 0 deletions(-)
+
+diff --git a/arch/arm/mach-omap2/board-omap3beagle.c b/arch/arm/mach-omap2/board-omap3beagle.c
+index 2677b41..7ca2b3b 100644
+--- a/arch/arm/mach-omap2/board-omap3beagle.c
++++ b/arch/arm/mach-omap2/board-omap3beagle.c
+@@ -175,6 +175,93 @@ static void __init omap3beagle_ks8851_init(void)
+ static inline void __init omap3beagle_ks8851_init(void) { return; }
+ #endif
+ 
++/*
++ * OMAP3 Beagle revision
++ * Run time detection of Beagle revision is done by reading GPIO.
++ * GPIO ID -
++ *     AXBX    = GPIO173, GPIO172, GPIO171: 1 1 1
++ *     C1_3    = GPIO173, GPIO172, GPIO171: 1 1 0
++ *     C4      = GPIO173, GPIO172, GPIO171: 1 0 1
++ *     XM      = GPIO173, GPIO172, GPIO171: 0 0 0
++ */
++enum {
++       OMAP3BEAGLE_BOARD_UNKN = 0,
++       OMAP3BEAGLE_BOARD_AXBX,
++       OMAP3BEAGLE_BOARD_C1_3,
++       OMAP3BEAGLE_BOARD_C4,
++       OMAP3BEAGLE_BOARD_XM,
++};
++
++static u8 omap3_beagle_version;
++
++static u8 omap3_beagle_get_rev(void)
++{
++       return omap3_beagle_version;
++}
++
++static void __init omap3_beagle_init_rev(void)
++{
++       int ret;
++       u16 beagle_rev = 0;
++
++       omap_mux_init_gpio(171, OMAP_PIN_INPUT_PULLUP);
++       omap_mux_init_gpio(172, OMAP_PIN_INPUT_PULLUP);
++       omap_mux_init_gpio(173, OMAP_PIN_INPUT_PULLUP);
++
++       ret = gpio_request(171, "rev_id_0");
++       if (ret < 0)
++               goto fail0;
++
++       ret = gpio_request(172, "rev_id_1");
++       if (ret < 0)
++               goto fail1;
++
++       ret = gpio_request(173, "rev_id_2");
++       if (ret < 0)
++               goto fail2;
++
++       gpio_direction_input(171);
++       gpio_direction_input(172);
++       gpio_direction_input(173);
++
++       beagle_rev = gpio_get_value(171) | (gpio_get_value(172) << 1)
++                       | (gpio_get_value(173) << 2);
++
++       switch (beagle_rev) {
++       case 7:
++               printk(KERN_INFO "OMAP3 Beagle Rev: Ax/Bx\n");
++               omap3_beagle_version = OMAP3BEAGLE_BOARD_AXBX;
++               break;
++       case 6:
++               printk(KERN_INFO "OMAP3 Beagle Rev: C1/C2/C3\n");
++               omap3_beagle_version = OMAP3BEAGLE_BOARD_C1_3;
++               break;
++       case 5:
++               printk(KERN_INFO "OMAP3 Beagle Rev: C4\n");
++               omap3_beagle_version = OMAP3BEAGLE_BOARD_C4;
++               break;
++       case 0:
++               printk(KERN_INFO "OMAP3 Beagle Rev: xM\n");
++               omap3_beagle_version = OMAP3BEAGLE_BOARD_XM;
++               break;
++       default:
++               printk(KERN_INFO "OMAP3 Beagle Rev: unknown %hd\n", beagle_rev);
++               omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
++       }
++
++       return;
++
++fail2:
++       gpio_free(172);
++fail1:
++       gpio_free(171);
++fail0:
++       printk(KERN_ERR "Unable to get revision detection GPIO pins\n");
++       omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
++
++       return;
++}
++
+ static struct mtd_partition omap3beagle_nand_partitions[] = {
+        /* All the partition sizes are listed in terms of NAND block size */
+        {
+@@ -853,6 +940,7 @@ static int __init cameraboard_setup(char *str)
+ static void __init omap3_beagle_init(void)
+ {
+        omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
++       omap3_beagle_init_rev();
+        omap3_beagle_i2c_init();
+ 
+        if (cpu_is_omap3630()) {
+-- 
+1.6.6.1
+