[U-Boot] OMAP3, Zoom2 Initializing GPIO bank clocks
In OMAP3, the GPIO bank clocks should only be turned on as needed. This is done at the config file level. Zoom2 uses GPIO so it must turn on the GPIO bank clocks it needs.
The function and interface clocks for each GPIO bank, except the first, must be explicitly turned on. These are controlled by the config level defines CONFIG_OMAP3_GPIO_n where n is from 2 to 6.
Signed-off-by: Tom Rix Tom.Rix@windriver.com --- cpu/arm_cortexa8/omap3/clock.c | 22 ++++++++++++++++++++++ 1 files changed, 22 insertions(+), 0 deletions(-)
diff --git a/cpu/arm_cortexa8/omap3/clock.c b/cpu/arm_cortexa8/omap3/clock.c index d035677..0306b6c 100644 --- a/cpu/arm_cortexa8/omap3/clock.c +++ b/cpu/arm_cortexa8/omap3/clock.c @@ -357,6 +357,28 @@ void per_clocks_enable(void) sr32(&prcm_base->fclken_per, 11, 1, 0x1); sr32(&prcm_base->iclken_per, 11, 1, 0x1); #endif + +#ifdef CONFIG_OMAP3_GPIO_2 + sr32(&prcm_base->fclken_per, 13, 1, 1); + sr32(&prcm_base->iclken_per, 13, 1, 1); +#endif +#ifdef CONFIG_OMAP3_GPIO_3 + sr32(&prcm_base->fclken_per, 14, 1, 1); + sr32(&prcm_base->iclken_per, 14, 1, 1); +#endif +#ifdef CONFIG_OMAP3_GPIO_4 + sr32(&prcm_base->fclken_per, 15, 1, 1); + sr32(&prcm_base->iclken_per, 15, 1, 1); +#endif +#ifdef CONFIG_OMAP3_GPIO_5 + sr32(&prcm_base->fclken_per, 16, 1, 1); + sr32(&prcm_base->iclken_per, 16, 1, 1); +#endif +#ifdef CONFIG_OMAP3_GPIO_6 + sr32(&prcm_base->fclken_per, 17, 1, 1); + sr32(&prcm_base->iclken_per, 17, 1, 1); +#endif + #ifdef CONFIG_DRIVER_OMAP34XX_I2C /* Turn on all 3 I2C clocks */ sr32(&prcm_base->fclken1_core, 15, 3, 0x7);
Enable the function and interface clocks for banks 2,3,5 and 6.
Signed-off-by: Tom Rix Tom.Rix@windriver.com --- include/configs/omap3_zoom2.h | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/include/configs/omap3_zoom2.h b/include/configs/omap3_zoom2.h index e257419..c2ad5bf 100644 --- a/include/configs/omap3_zoom2.h +++ b/include/configs/omap3_zoom2.h @@ -115,6 +115,14 @@ /* Optional value */ #define STATUS_LED_BOOT STATUS_LED_BIT
+/* GPIO banks */ +#ifdef CONFIG_STATUS_LED +#define CONFIG_OMAP3_GPIO_2 /* ZOOM2_LED_BLUE2 */ +#define CONFIG_OMAP3_GPIO_6 /* ZOOM2_LED_RED */ +#endif +#define CONFIG_OMAP3_GPIO_3 /* board revision */ +#define CONFIG_OMAP3_GPIO_5 /* debug board detection, ZOOM2_LED_BLUE */ + /* commands to include */ #include <config_cmd_default.h>
On 13:57 Fri 29 May , Tom Rix wrote:
Enable the function and interface clocks for banks 2,3,5 and 6.
Signed-off-by: Tom Rix Tom.Rix@windriver.com
applied to arm/next
Best Regards, J.
On 13:57 Fri 29 May , Tom Rix wrote:
The function and interface clocks for each GPIO bank, except the first, must be explicitly turned on. These are controlled by the config level defines CONFIG_OMAP3_GPIO_n where n is from 2 to 6.
Signed-off-by: Tom Rix Tom.Rix@windriver.com
applied to arm/next
Best Regards, J.
participants (2)
-
Jean-Christophe PLAGNIOL-VILLARD -
Tom Rix