diff options
| author | Eric Nelson <eric.nelson@boundarydevices.com> | 2012-03-27 09:52:21 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-05-15 08:31:33 +0200 |
| commit | 64e7cdb5e8fe082b0afd4438a58c4d8a70a1a3d6 (patch) | |
| tree | 69d601d95ce5c32b22c49cca726eb57d3129eccd /arch/arm/cpu | |
| parent | cac833a98cf7e111bd07b15fe59ef85fca1c46e7 (diff) | |
i.MX6: add enable_sata_clock()
Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
Signed-off-by: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'arch/arm/cpu')
| -rw-r--r-- | arch/arm/cpu/armv7/mx6/clock.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/mx6/clock.c b/arch/arm/cpu/armv7/mx6/clock.c index 0f0543294..52d5dc4d9 100644 --- a/arch/arm/cpu/armv7/mx6/clock.c +++ b/arch/arm/cpu/armv7/mx6/clock.c @@ -292,6 +292,37 @@ u32 imx_get_fecclk(void) return decode_pll(PLL_ENET, CONFIG_SYS_MX6_HCLK); } +int enable_sata_clock(void) +{ + u32 reg = 0; + s32 timeout = 100000; + struct mxc_ccm_reg *const imx_ccm + = (struct mxc_ccm_reg *) CCM_BASE_ADDR; + + /* Enable sata clock */ + reg = readl(&imx_ccm->CCGR5); /* CCGR5 */ + reg |= MXC_CCM_CCGR5_CG2_MASK; + writel(reg, &imx_ccm->CCGR5); + + /* Enable PLLs */ + reg = readl(&imx_ccm->analog_pll_enet); + reg &= ~BM_ANADIG_PLL_SYS_POWERDOWN; + writel(reg, &imx_ccm->analog_pll_enet); + reg |= BM_ANADIG_PLL_SYS_ENABLE; + while (timeout--) { + if (readl(&imx_ccm->analog_pll_enet) & BM_ANADIG_PLL_SYS_LOCK) + break; + } + if (timeout <= 0) + return -EIO; + reg &= ~BM_ANADIG_PLL_SYS_BYPASS; + writel(reg, &imx_ccm->analog_pll_enet); + reg |= BM_ANADIG_PLL_ENET_ENABLE_SATA; + writel(reg, &imx_ccm->analog_pll_enet); + + return 0 ; +} + unsigned int mxc_get_clock(enum mxc_clock clk) { switch (clk) { |