diff options
| author | Hartley Sweeten <hartleys@visionengravers.com> | 2009-05-07 18:41:47 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-05-16 19:55:56 +0100 |
| commit | ff05c0330b9880f9ccbb7fa40f2ed3b5842f5693 (patch) | |
| tree | a1e991f17d63e2c6b6eb1f6ebbbce8068b819ea8 /arch/arm/mach-ep93xx/include | |
| parent | cddb783552f51b5e39fc2db3a34d150d753758e4 (diff) | |
[ARM] 5509/1: ep93xx: clkdev enable UARTS
Fix the clkdev API support for the ep93xx uart clocks.
The uarts available in the ep93xx have individual clock controls.
The current implementation assumes that the bootloader has enabled
the clocks before the kernel has booted. It also assumes that the
bootloader has set the UARTBAUD bit indicating that the uarts are
running off the 14.7456MHz external crystal.
This fixes both issues. It also allows the uart clocks to be stopped
when there are no users.
Tested-by: Matthias Kaehlcke <matthias@kaehlcke.net>
Cc: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-ep93xx/include')
| -rw-r--r-- | arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h b/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h index f66be12b856..1732de7629a 100644 --- a/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h +++ b/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h @@ -159,7 +159,10 @@ #define EP93XX_SYSCON_CLOCK_SET1 EP93XX_SYSCON_REG(0x20) #define EP93XX_SYSCON_CLOCK_SET2 EP93XX_SYSCON_REG(0x24) #define EP93XX_SYSCON_DEVICE_CONFIG EP93XX_SYSCON_REG(0x80) -#define EP93XX_SYSCON_DEVICE_CONFIG_CRUNCH_ENABLE 0x00800000 +#define EP93XX_SYSCON_DEVICE_CONFIG_U3EN (1<<24) +#define EP93XX_SYSCON_DEVICE_CONFIG_CRUNCH_ENABLE (1<<23) +#define EP93XX_SYSCON_DEVICE_CONFIG_U2EN (1<<20) +#define EP93XX_SYSCON_DEVICE_CONFIG_U1EN (1<<18) #define EP93XX_SYSCON_SWLOCK EP93XX_SYSCON_REG(0xc0) #define EP93XX_WATCHDOG_BASE (EP93XX_APB_VIRT_BASE + 0x00140000) |