[U-Boot] [PATCH 7/9] ARM: sunxi: Allow specifying module in prcm apb0 init function

Chen-Yu Tsai
2014-10-07T07:11:55Z

The prcm apb0 controls multiple modules. Allow specifying which
modules to enable clocks and de-assert resets so the function
can be reused.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
arch/arm/cpu/armv7/sunxi/prcm.c | 12 +++++++-----
arch/arm/include/asm/arch-sunxi/prcm.h | 2 +-
2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/arch/arm/cpu/armv7/sunxi/prcm.c b/arch/arm/cpu/armv7/sunxi/prcm.c
index 7b3ee89..19b4938 100644
--- a/arch/arm/cpu/armv7/sunxi/prcm.c
+++ b/arch/arm/cpu/armv7/sunxi/prcm.c
@@ -21,13 +21,15 @@
#include <asm/arch/prcm.h>
#include <asm/arch/sys_proto.h>

-void prcm_init_apb0(void)
+/* APB0 clock gate and reset bit offsets are the same. */
+void prcm_apb0_enable(u32 flags)
{
struct sunxi_prcm_reg *prcm =
(struct sunxi_prcm_reg *)SUNXI_PRCM_BASE;

- setbits_le32(&prcm->apb0_gate, PRCM_APB0_GATE_P2WI |
- PRCM_APB0_GATE_PIO);
- setbits_le32(&prcm->apb0_reset, PRCM_APB0_RESET_P2WI |
- PRCM_APB0_RESET_PIO);
+ /* open the clock for module */
+ setbits_le32(&prcm->apb0_gate, flags);
+
+ /* deassert reset for module */
+ setbits_le32(&prcm->apb0_reset, flags);
}
diff --git a/arch/arm/include/asm/arch-sunxi/prcm.h b/arch/arm/include/asm/arch-sunxi/prcm.h
index 1b40f09..3d3bfa6 100644
--- a/arch/arm/include/asm/arch-sunxi/prcm.h
+++ b/arch/arm/include/asm/arch-sunxi/prcm.h
@@ -233,6 +233,6 @@ struct sunxi_prcm_reg {
u32 dram_tst; /* 0x190 */
};

-void prcm_init_apb0(void);
+void prcm_apb0_enable(u32 flags);
#endif /* __ASSEMBLY__ */
#endif /* _PRCM_H */
--
2.1.1