arm: spear: enable GPIO3 and 4 clocks when the GPIO controller driver is built

There are multiple GPIOs that can be used with the same driver depending
on the CONFIG_GPIO_BASE defined in the controller driver.

GPIO3 and 4 require a clock to be enabled so let's enable them when the
driver is built.

Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com>

diff --git a/arch/arm/cpu/arm926ejs/spear/cpu.c b/arch/arm/cpu/arm926ejs/spear/cpu.c
index e852a88..88a40c6 100644 (file)
--- a/arch/arm/cpu/arm926ejs/spear/cpu.c
+++ b/arch/arm/cpu/arm926ejs/spear/cpu.c
@@ -49,6 +49,9 @@ int arch_cpu_init(void)
 #if defined(CONFIG_USB_EHCI_SPEAR)
        periph1_clken |= PERIPH_USBH1 | PERIPH_USBH2;
 #endif
+#if defined(CONFIG_SPEAR_GPIO)
+       periph1_clken |= MISC_GPIO3ENB | MISC_GPIO4ENB;
+#endif
 
        writel(periph1_clken, &misc_p->periph1_clken);
 

diff --git a/arch/arm/include/asm/arch-spear/spr_misc.h b/arch/arm/include/asm/arch-spear/spr_misc.h
index c906730..65063fc 100644 (file)
--- a/arch/arm/include/asm/arch-spear/spr_misc.h
+++ b/arch/arm/include/asm/arch-spear/spr_misc.h
@@ -144,6 +144,7 @@ struct misc_regs {
 #define MISC_USBDENB                   0x01000000
 #define MISC_ETHENB                    0x00800000
 #define MISC_SMIENB                    0x00200000
+#define MISC_GPIO3ENB                  0x00040000
 #define MISC_GPT3ENB                   0x00010000
 #define MISC_GPIO4ENB                  0x00002000
 #define MISC_GPT2ENB                   0x00000800