1 files changed, 71 insertions, 0 deletions

diff --git a/meta/recipes-kernel/linux/linux-omap2-git/beagleboard/TWL4030-02.patch b/meta/recipes-kernel/linux/linux-omap2-git/beagleboard/TWL4030-02.patch
new file mode 100644
index 0000000000..48a59b945b
--- /dev/null
+++ b/meta/recipes-kernel/linux/linux-omap2-git/beagleboard/TWL4030-02.patch
@@ -0,0 +1,71 @@
+TWL4030: clear TWL GPIO interrupt status registers
+
+From: Paul Walmsley <paul@pwsan.com>
+
+twl_init_irq() does not clear the TWL GPIO ISR registers, but the PIH
+ISR thinks that it has.  This causes any previously-latched GPIO interrupts
+to be stuck on until twl4030-gpio.c initializes, often drowning the console in
+
+    TWL4030 module irq 368 is disabled but can't be masked!
+
+messages.  This seems to be a particular problem when booting on Beagle.
+
+Signed-off-by: Paul Walmsley <paul@pwsan.com>
+---
+
+ drivers/i2c/chips/twl4030-core.c |   42 ++++++++++++++++++++++++++++++++++++++
+ 1 files changed, 42 insertions(+), 0 deletions(-)
+
+diff --git a/drivers/i2c/chips/twl4030-core.c b/drivers/i2c/chips/twl4030-core.c
+index ff662bc..dfc3805 100644
+--- a/drivers/i2c/chips/twl4030-core.c
++++ b/drivers/i2c/chips/twl4030-core.c
+@@ -857,6 +857,48 @@ static void twl_init_irq(void)
+                return;
+        }
+ 
++       /* GPIO_ISR1A */
++       res = twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff, 0x19);
++       if (res < 0) {
++               pr_err("%s[%d][%d]\n", msg, res, __LINE__);
++               return;
++       }
++
++       /* GPIO_ISR2A */
++       res = twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff, 0x1a);
++       if (res < 0) {
++               pr_err("%s[%d][%d]\n", msg, res, __LINE__);
++               return;
++       }
++
++       /* GPIO_ISR3A */
++       res = twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff, 0x1b);
++       if (res < 0) {
++               pr_err("%s[%d][%d]\n", msg, res, __LINE__);
++               return;
++       }
++
++       /* GPIO_ISR1B */
++       res = twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff, 0x1f);
++       if (res < 0) {
++               pr_err("%s[%d][%d]\n", msg, res, __LINE__);
++               return;
++       }
++
++       /* GPIO_ISR2B */
++       res = twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff, 0x20);
++       if (res < 0) {
++               pr_err("%s[%d][%d]\n", msg, res, __LINE__);
++               return;
++       }
++
++       /* GPIO_ISR3B */
++       res = twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff, 0x21);
++       if (res < 0) {
++               pr_err("%s[%d][%d]\n", msg, res, __LINE__);
++               return;
++       }
++
+        /* install an irq handler for each of the PIH modules */
+        for (i = TWL4030_IRQ_BASE; i < TWL4030_IRQ_END; i++) {
+                set_irq_chip(i, &twl4030_irq_chip);