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| author | Antony Pavlov <antonynpavlov@gmail.com> | 2013-06-03 14:53:23 +0400 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2013-06-04 07:18:42 +0200 |
| commit | fcffb0d2c6e02a84361962496838bdb2897eae37 (patch) | |
| tree | 3b13a5b4475033f93228b43a3f6823ae8ba176b5 /arch | |
| parent | 56bd91c9a19735f08926db9b9736565fe1672b12 (diff) | |
| download | barebox-fcffb0d2c6e02a84361962496838bdb2897eae37.tar.gz barebox-fcffb0d2c6e02a84361962496838bdb2897eae37.tar.xz | |
MIPS: rzx50: prepare for new debug_ll
Set DEBUG_LL_UART_DIVISOR to use <asm/debug_ll_ns16550.h>.
The JZ4755 uses 24 MHz as the main reference frequency (EXCLK).
The UART controller can work on full EXCLK or on EXCLK/2.
Just now we use EXCLK/2 legacy clock setup made by U-Boot.
So set UART controller base frequency to 12 MHz.
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/mach-xburst/include/mach/debug_ll_jz4750d.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/mips/mach-xburst/include/mach/debug_ll_jz4750d.h b/arch/mips/mach-xburst/include/mach/debug_ll_jz4750d.h index 7bf66b12ae..2a55dea437 100644 --- a/arch/mips/mach-xburst/include/mach/debug_ll_jz4750d.h +++ b/arch/mips/mach-xburst/include/mach/debug_ll_jz4750d.h @@ -34,4 +34,8 @@ #define DEBUG_LL_UART_SHIFT 2 +#define DEBUG_LL_UART_CLK (12000000 / 16) +#define DEBUG_LL_UART_BPS CONFIG_BAUDRATE +#define DEBUG_LL_UART_DIVISOR (DEBUG_LL_UART_CLK / DEBUG_LL_UART_BPS) + #endif /* __INCLUDE_DEBUG_LL_JZ4750D_H__ */ |