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| author | Benoît Thébaudeau <benoit.thebaudeau@advansee.com> | 2012-09-27 10:21:22 +0000 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2012-10-15 11:54:10 -0700 |
| commit | 248cdf0b5270651ca5eefb1aff4a338df6a1ca25 (patch) | |
| tree | c87a72170aa90295c975b73f9c71eed0af83f7af /arch | |
| parent | 1f5e4ee0b9e06a129a6a1b117d77c77189c18542 (diff) | |
| download | u-boot-imx-248cdf0b5270651ca5eefb1aff4a338df6a1ca25.zip u-boot-imx-248cdf0b5270651ca5eefb1aff4a338df6a1ca25.tar.gz u-boot-imx-248cdf0b5270651ca5eefb1aff4a338df6a1ca25.tar.bz2 | |
mx5: Fix clock gate values
The clock gate values are 2-bit bit-fields. Hence, setting or clearing only one
of these bits like what was done is wrong and can lead to unpredictable behavior
depending on the original value of these bit-fields.
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Cc: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/cpu/armv7/mx5/clock.c | 27 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-mx5/crm_regs.h | 3 |
2 files changed, 18 insertions, 12 deletions
diff --git a/arch/arm/cpu/armv7/mx5/clock.c b/arch/arm/cpu/armv7/mx5/clock.c index cba5d1b..171d762 100644 --- a/arch/arm/cpu/armv7/mx5/clock.c +++ b/arch/arm/cpu/armv7/mx5/clock.c @@ -101,10 +101,11 @@ void set_usboh3_clk(void) void enable_usboh3_clk(unsigned char enable) { - if (enable) - setbits_le32(&mxc_ccm->CCGR2, MXC_CCM_CCGR2_USBOH3_60M(1)); - else - clrbits_le32(&mxc_ccm->CCGR2, MXC_CCM_CCGR2_USBOH3_60M(1)); + unsigned int cg = enable ? MXC_CCM_CCGR_CG_ON : MXC_CCM_CCGR_CG_OFF; + + clrsetbits_le32(&mxc_ccm->CCGR2, + MXC_CCM_CCGR2_USBOH3_60M(MXC_CCM_CCGR_CG_MASK), + MXC_CCM_CCGR2_USBOH3_60M(cg)); } #ifdef CONFIG_I2C_MXC @@ -132,10 +133,11 @@ void set_usb_phy1_clk(void) void enable_usb_phy1_clk(unsigned char enable) { - if (enable) - setbits_le32(&mxc_ccm->CCGR4, MXC_CCM_CCGR4_USB_PHY1(1)); - else - clrbits_le32(&mxc_ccm->CCGR4, MXC_CCM_CCGR4_USB_PHY1(1)); + unsigned int cg = enable ? MXC_CCM_CCGR_CG_ON : MXC_CCM_CCGR_CG_OFF; + + clrsetbits_le32(&mxc_ccm->CCGR4, + MXC_CCM_CCGR4_USB_PHY1(MXC_CCM_CCGR_CG_MASK), + MXC_CCM_CCGR4_USB_PHY1(cg)); } void set_usb_phy2_clk(void) @@ -145,10 +147,11 @@ void set_usb_phy2_clk(void) void enable_usb_phy2_clk(unsigned char enable) { - if (enable) - setbits_le32(&mxc_ccm->CCGR4, MXC_CCM_CCGR4_USB_PHY2(1)); - else - clrbits_le32(&mxc_ccm->CCGR4, MXC_CCM_CCGR4_USB_PHY2(1)); + unsigned int cg = enable ? MXC_CCM_CCGR_CG_ON : MXC_CCM_CCGR_CG_OFF; + + clrsetbits_le32(&mxc_ccm->CCGR4, + MXC_CCM_CCGR4_USB_PHY2(MXC_CCM_CCGR_CG_MASK), + MXC_CCM_CCGR4_USB_PHY2(cg)); } /* diff --git a/arch/arm/include/asm/arch-mx5/crm_regs.h b/arch/arm/include/asm/arch-mx5/crm_regs.h index d5eb303..3b0ed64 100644 --- a/arch/arm/include/asm/arch-mx5/crm_regs.h +++ b/arch/arm/include/asm/arch-mx5/crm_regs.h @@ -285,6 +285,9 @@ struct mxc_ccm_reg { /* Define the bits in register CCGRx */ #define MXC_CCM_CCGR_CG_MASK 0x3 +#define MXC_CCM_CCGR_CG_OFF 0x0 +#define MXC_CCM_CCGR_CG_RUN_ON 0x1 +#define MXC_CCM_CCGR_CG_ON 0x3 #define MXC_CCM_CCGR0_ARM_BUS_OFFSET 0 #define MXC_CCM_CCGR0_ARM_BUS(v) (((v) & 0x3) << 0) |