Dear Marek Vasut, On Monday, February 25, 2013 7:19:56 PM, Marek Vasut wrote: > Augment the MX5 clock code with function to enable and configure > NFC clock. This is necessary to get NFC working on MX5. > > Signed-off-by: Marek Vasut <ma...@denx.de> > Cc: Benoît Thébaudeau <benoit.thebaud...@advansee.com> > Cc: Fabio Estevam <fabio.este...@freescale.com> > Cc: Stefano Babic <sba...@denx.de> > --- > arch/arm/cpu/armv7/mx5/clock.c | 12 ++++++++++-- > arch/arm/include/asm/arch-mx5/clock.h | 1 + > 2 files changed, 11 insertions(+), 2 deletions(-) > > diff --git a/arch/arm/cpu/armv7/mx5/clock.c b/arch/arm/cpu/armv7/mx5/clock.c > index 76c2c52..f768fc9 100644 > --- a/arch/arm/cpu/armv7/mx5/clock.c > +++ b/arch/arm/cpu/armv7/mx5/clock.c > @@ -739,10 +739,11 @@ static int config_core_clk(u32 ref, u32 freq) > static int config_nfc_clk(u32 nfc_clk) > { > u32 parent_rate = get_emi_slow_clk(); > - u32 div = parent_rate / nfc_clk; > + u32 div; > > - if (nfc_clk <= 0) > + if (nfc_clk == 0) > return -EINVAL; > + div = parent_rate / nfc_clk; > if (div == 0) > div++; > if (parent_rate / div > NFC_CLK_MAX) > @@ -755,6 +756,13 @@ static int config_nfc_clk(u32 nfc_clk) > return 0; > } > > +void enable_nfc_clk(unsigned char enable) > +{ > + unsigned int cg = enable ? MXC_CCM_CCGR_CG_ON : MXC_CCM_CCGR_CG_OFF; > + > + clrsetbits_le32(&mxc_ccm->CCGR5, MXC_CCM_CCGR_CG_MASK << 20, cg << 20);
Please use MXC_CCM_CCGR5_EMI_ENFC(MXC_CCM_CCGR_CG_MASK) and MXC_CCM_CCGR_CG_MASK(cg). > +} > + > /* Config main_bus_clock for periphs */ > static int config_periph_clk(u32 ref, u32 freq) > { > diff --git a/arch/arm/include/asm/arch-mx5/clock.h > b/arch/arm/include/asm/arch-mx5/clock.h > index 9cdfb48..6910192 100644 > --- a/arch/arm/include/asm/arch-mx5/clock.h > +++ b/arch/arm/include/asm/arch-mx5/clock.h > @@ -68,5 +68,6 @@ void set_usboh3_clk(void); > void enable_usboh3_clk(unsigned char enable); > void mxc_set_sata_internal_clock(void); > int enable_i2c_clk(unsigned char enable, unsigned i2c_num); > +void enable_nfc_clk(unsigned char enable); > > #endif /* __ASM_ARCH_CLOCK_H */ > -- > 1.7.10.4 > > Best regards, Benoît _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot