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authorEnric Balletbo i Serra <eballetbo@gmail.com>2014-01-25 22:52:22 +0100
committerTom Rini <trini@ti.com>2014-03-06 11:21:37 -0500
commitdd1e8583ee533a349c03ed4d75446898fe8dbac6 (patch)
treedd14fcfb0ee38e844acd3d2de123ebd8a9a39bcc /include
parent4b75fd510076f2261c5e21b9b8cf75c9f01ded3c (diff)
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OMAP3: igep00x0: Enable required clocks for GPIO that are used.
Enable required clocks for GPIO to fix a boot issue introduced by commit f33b9bd3984fb11e1d8566a866adc5957b1e1c9d (arm: omap3: Enable clocks for peripherals only if they are used). Without this patch the u-boot freezes after the following messages OMAP36XX/37XX-GP ES1.2, CPU-OPP2, L3-200MHz, Max CPU Clock 1 Ghz IGEPv2 + LPDDR/NAND I2C: ready DRAM: 512 MiB NAND: 512 MiB MMC: OMAP SD/MMC: 0 Diving into the issue, the sequence that produces the u-boot freezes is setup_net_chip |--> gpio_direction_out |--> _set_gpio_dataout |--> __raw_writel To avoid this we just need enable the clocks for GPIOs that are used, but it would be interesting implement a mechanism to protect these situations and make sure that the clock is enabled when we request a GPIO. Signed-off-by: Enric Balletbo i Serra <eballetbo@gmail.com>
Diffstat (limited to 'include')
-rw-r--r--include/configs/omap3_igep00x0.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/configs/omap3_igep00x0.h b/include/configs/omap3_igep00x0.h
index 20fbbec..8cc23c1 100644
--- a/include/configs/omap3_igep00x0.h
+++ b/include/configs/omap3_igep00x0.h
@@ -37,6 +37,11 @@
#define CONFIG_SHOW_BOOT_PROGRESS
#endif
+/* GPIO banks */
+#define CONFIG_OMAP3_GPIO_3 /* GPIO64 .. 95 is in GPIO bank 3 */
+#define CONFIG_OMAP3_GPIO_5 /* GPIO128..159 is in GPIO bank 5 */
+#define CONFIG_OMAP3_GPIO_6 /* GPIO160..191 is in GPIO bank 6 */
+
/* USB */
#define CONFIG_MUSB_UDC 1
#define CONFIG_USB_OMAP3 1