add enable_spi_clk(), so board code can enable spi clocks.
Signed-off-by: Heiko Schocher <h...@denx.de>
Cc: Eric Nelson <eric.nel...@boundarydevices.com>
Cc: Stefano Babic <sba...@denx.de>
---
arch/arm/cpu/armv7/mx6/clock.c | 17 +++++++++++++++++
arch/arm/include/asm/arch-mx6/clock.h | 1 +
2 files changed, 18 insertions(+)
diff --git a/arch/arm/cpu/armv7/mx6/clock.c b/arch/arm/cpu/armv7/mx6/clock.c
index bd65a08..4735368 100644
--- a/arch/arm/cpu/armv7/mx6/clock.c
+++ b/arch/arm/cpu/armv7/mx6/clock.c
@@ -71,6 +71,23 @@ int enable_i2c_clk(unsigned char enable, unsigned i2c_num)
}
#endif
+int enable_spi_clk(unsigned char enable, unsigned spi_num)
+{
+ u32 reg;
+ u32 mask;
+
+ if (spi_num > 3)
+ return -EINVAL;
+
+ mask = MXC_CCM_CCGR_CG_MASK << (spi_num << 1);
+ reg = __raw_readl(&imx_ccm->CCGR1);
+ if (enable)
+ reg |= mask;
+ else
+ reg &= ~mask;
+ __raw_writel(reg, &imx_ccm->CCGR1);
+ return 0;
+}
static u32 decode_pll(enum pll_clocks pll, u32 infreq)
{
u32 div;
diff --git a/arch/arm/include/asm/arch-mx6/clock.h
b/arch/arm/include/asm/arch-mx6/clock.h
index 1b4ded7..339c789 100644
--- a/arch/arm/include/asm/arch-mx6/clock.h
+++ b/arch/arm/include/asm/arch-mx6/clock.h
@@ -57,6 +57,7 @@ void enable_usboh3_clk(unsigned char enable);
int enable_sata_clock(void);
int enable_pcie_clock(void);
int enable_i2c_clk(unsigned char enable, unsigned i2c_num);
+int enable_spi_clk(unsigned char enable, unsigned spi_num);
void enable_ipu_clock(void);
int enable_fec_anatop_clock(enum enet_freq freq);
#endif /* __ASM_ARCH_CLOCK_H */
--
1.8.3.1
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