diff options
| author | Stefano Babic <sbabic@denx.de> | 2012-02-22 00:24:38 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-05-15 08:31:30 +0200 |
| commit | 8c38b5d03d701134b7d6e4eeea94c229f7470d27 (patch) | |
| tree | fb96f7388e249529720117180c28f83ad9207c76 /arch/arm/include/asm/arch-mx5 | |
| parent | 71cadda3ff8e0607c7b927582e1d9c9913857e6a (diff) | |
MX53: add function to set SATA clock to internal
The MX53 SATA interface can use an internal clock (USB PHY1)
instead of an external clock. This is an undocumented feature, but used
on most Freescale's evaluation boards, such as MX53-loco.
As stated by Freescale's support:
Fuses (but not pins) may be used to configure SATA clocks.
Particularly the i.MX53 Fuse_Map contains the next information
about configuring SATA clocks :
SATA_ALT_REF_CLK[1:0] (offset 0x180C)
'00' - 100MHz (External)
'01' - 50MHz (External)
'10' - 120MHz, internal (USB PHY)
'11' - Reserved
Signed-off-by: Stefano Babic <sbabic@denx.de>
CC: Fabio Estevam <fabio.estevam@freescale.com>
Diffstat (limited to 'arch/arm/include/asm/arch-mx5')
| -rw-r--r-- | arch/arm/include/asm/arch-mx5/clock.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-mx5/clock.h b/arch/arm/include/asm/arch-mx5/clock.h index f9f82f3918..e822809d7f 100644 --- a/arch/arm/include/asm/arch-mx5/clock.h +++ b/arch/arm/include/asm/arch-mx5/clock.h @@ -45,5 +45,6 @@ void set_usb_phy2_clk(void); void enable_usb_phy2_clk(unsigned char enable); void set_usboh3_clk(void); void enable_usboh3_clk(unsigned char enable); +void mxc_set_sata_internal_clock(void); #endif /* __ASM_ARCH_CLOCK_H */ |