diff options
| author | Jayachandran C <jchandra@broadcom.com> | 2013-01-14 16:11:57 +0100 |
|---|---|---|
| committer | John Crispin <blogic@openwrt.org> | 2013-02-17 00:15:20 +0100 |
| commit | 4e45e542cd742c1c3e30e7f252640644c66548b5 (patch) | |
| tree | d2c744190851b06cf7cd326ff3df16d2a6badae3 /arch/mips/netlogic/xlr | |
| parent | MIPS: Netlogic: Split XLP L1 i-cache among threads (diff) | |
| download | linux-4e45e542cd742c1c3e30e7f252640644c66548b5.tar.xz linux-4e45e542cd742c1c3e30e7f252640644c66548b5.zip | |
MIPS: Netlogic: Use PIC timer as a clocksource
The XLR/XLS/XLP PIC has a 8 countdown timers which run at the PIC
frequencey. One of these can be used as a clocksource to provide
timestamps that is common across cores. This can be used in place
of the count/compare clocksource which is per-CPU.
On XLR/XLS PIC registers are 32-bit, so we just use the lower 32-bits
of the PIC counter. On XLP, the whole 64-bit can be used.
Provide common macros and functions for PIC timer registers on XLR/XLS
and XLP, and use them to register a PIC clocksource.
Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/4786/
Signed-off-by: John Crispin <blogic@openwrt.org>
Diffstat (limited to 'arch/mips/netlogic/xlr')
| -rw-r--r-- | arch/mips/netlogic/xlr/platform.c | 2 | ||||
| -rw-r--r-- | arch/mips/netlogic/xlr/setup.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/arch/mips/netlogic/xlr/platform.c b/arch/mips/netlogic/xlr/platform.c index 507230eeb768..ce838f951356 100644 --- a/arch/mips/netlogic/xlr/platform.c +++ b/arch/mips/netlogic/xlr/platform.c @@ -64,7 +64,7 @@ void nlm_xlr_uart_out(struct uart_port *p, int offset, int value) .iotype = UPIO_MEM32, \ .flags = (UPF_SKIP_TEST | \ UPF_FIXED_TYPE | UPF_BOOT_AUTOCONF),\ - .uartclk = PIC_CLKS_PER_SEC, \ + .uartclk = PIC_CLK_HZ, \ .type = PORT_16550A, \ .serial_in = nlm_xlr_uart_in, \ .serial_out = nlm_xlr_uart_out, \ diff --git a/arch/mips/netlogic/xlr/setup.c b/arch/mips/netlogic/xlr/setup.c index c5ce6992ac4c..54b301c809e1 100644 --- a/arch/mips/netlogic/xlr/setup.c +++ b/arch/mips/netlogic/xlr/setup.c @@ -70,7 +70,7 @@ static void __init nlm_early_serial_setup(void) s.iotype = UPIO_MEM32; s.regshift = 2; s.irq = PIC_UART_0_IRQ; - s.uartclk = PIC_CLKS_PER_SEC; + s.uartclk = PIC_CLK_HZ; s.serial_in = nlm_xlr_uart_in; s.serial_out = nlm_xlr_uart_out; s.mapbase = uart_base; |