diff options
| author | Wolfgang Grandegger <wg@denx.de> | 2011-11-11 14:03:34 +0100 |
|---|---|---|
| committer | Remy Bohmer <linux@bohmer.net> | 2011-12-11 14:49:25 +0100 |
| commit | 5d2947a3fc8d130cfa39fccdefb87082abbf0e9b (patch) | |
| tree | b6a930fcec490f900ab366b66c44b7a183db937b /arch/arm/cpu | |
| parent | a954da2902e2e0fc54942691d6e0d64a7a1b3c3a (diff) | |
USB: MX5: add helper functions to enable USB clocks
Signed-off-by: Wolfgang Grandegger <wg@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Remy Bohmer <linux@bohmer.net>
Cc: Wolfgang Grandegger <wg@denx.de>
Cc: Jason Liu <r64343@freescale.com>
V2: Fix spacing in crm_regs.h
Diffstat (limited to 'arch/arm/cpu')
| -rw-r--r-- | arch/arm/cpu/armv7/mx5/clock.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/mx5/clock.c b/arch/arm/cpu/armv7/mx5/clock.c index 933ce05b76..e92f10623a 100644 --- a/arch/arm/cpu/armv7/mx5/clock.c +++ b/arch/arm/cpu/armv7/mx5/clock.c @@ -50,6 +50,78 @@ struct mxc_pll_reg *mxc_plls[PLL_CLOCKS] = { struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)MXC_CCM_BASE; +void set_usboh3_clk(void) +{ + unsigned int reg; + + reg = readl(&mxc_ccm->cscmr1) & + ~MXC_CCM_CSCMR1_USBOH3_CLK_SEL_MASK; + reg |= 1 << MXC_CCM_CSCMR1_USBOH3_CLK_SEL_OFFSET; + writel(reg, &mxc_ccm->cscmr1); + + reg = readl(&mxc_ccm->cscdr1); + reg &= ~MXC_CCM_CSCDR1_USBOH3_CLK_PODF_MASK; + reg &= ~MXC_CCM_CSCDR1_USBOH3_CLK_PRED_MASK; + reg |= 4 << MXC_CCM_CSCDR1_USBOH3_CLK_PRED_OFFSET; + reg |= 1 << MXC_CCM_CSCDR1_USBOH3_CLK_PODF_OFFSET; + + writel(reg, &mxc_ccm->cscdr1); +} + +void enable_usboh3_clk(unsigned char enable) +{ + unsigned int reg; + + reg = readl(&mxc_ccm->CCGR2); + if (enable) + reg |= 1 << MXC_CCM_CCGR2_CG14_OFFSET; + else + reg &= ~(1 << MXC_CCM_CCGR2_CG14_OFFSET); + writel(reg, &mxc_ccm->CCGR2); +} + +void set_usb_phy1_clk(void) +{ + unsigned int reg; + + reg = readl(&mxc_ccm->cscmr1); + reg &= ~MXC_CCM_CSCMR1_USB_PHY_CLK_SEL; + writel(reg, &mxc_ccm->cscmr1); +} + +void enable_usb_phy1_clk(unsigned char enable) +{ + unsigned int reg; + + reg = readl(&mxc_ccm->CCGR4); + if (enable) + reg |= 1 << MXC_CCM_CCGR4_CG5_OFFSET; + else + reg &= ~(1 << MXC_CCM_CCGR4_CG5_OFFSET); + writel(reg, &mxc_ccm->CCGR4); +} + +void set_usb_phy2_clk(void) +{ + unsigned int reg; + + reg = readl(&mxc_ccm->cscmr1); + reg &= ~MXC_CCM_CSCMR1_USB_PHY_CLK_SEL; + writel(reg, &mxc_ccm->cscmr1); +} + +void enable_usb_phy2_clk(unsigned char enable) +{ + unsigned int reg; + + reg = readl(&mxc_ccm->CCGR4); + if (enable) + reg |= 1 << MXC_CCM_CCGR4_CG6_OFFSET; + else + reg &= ~(1 << MXC_CCM_CCGR4_CG6_OFFSET); + writel(reg, &mxc_ccm->CCGR4); +} + /* * Calculate the frequency of PLLn. */ |