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| author | Øyvind Harboe <oyvind.harboe@zylin.com> | 2010-08-02 22:12:33 +0200 |
|---|---|---|
| committer | Øyvind Harboe <oyvind.harboe@zylin.com> | 2010-08-02 22:22:03 +0200 |
| commit | c49d4c9f7f43979e3abf04067dc38535f7ebc45a (patch) | |
| tree | 04aa9bc6937cc3d7bc02f6aff6abb166421425c7 /src | |
| parent | 4e27305ed5dac23e8b9a43e43b4b908dc53a0a20 (diff) | |
| download | riscv-openocd-c49d4c9f7f43979e3abf04067dc38535f7ebc45a.zip riscv-openocd-c49d4c9f7f43979e3abf04067dc38535f7ebc45a.tar.gz riscv-openocd-c49d4c9f7f43979e3abf04067dc38535f7ebc45a.tar.bz2 | |
zy1000: use correct base clock when calculating speed divisor
revc uses 60MHz and revb 64MHz, use this in calculations.
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/jtag/zy1000/zy1000.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/src/jtag/zy1000/zy1000.c b/src/jtag/zy1000/zy1000.c index 23f2fdd..3ecd0f9 100644 --- a/src/jtag/zy1000/zy1000.c +++ b/src/jtag/zy1000/zy1000.c @@ -1,4 +1,4 @@ -'n/*************************************************************************** +/*************************************************************************** * Copyright (C) 2007-2010 by Øyvind Harboe * * * * This program is free software; you can redistribute it and/or modify * @@ -62,6 +62,9 @@ #ifdef CYGPKG_HAL_NIOS2 #include <cyg/hal/io.h> #include <cyg/firmwareutil/firmwareutil.h> +#define ZYLIN_KHZ 60000 +#else +#define ZYLIN_KHZ 64000 #endif #define ZYLIN_VERSION GIT_ZY1000_VERSION @@ -70,6 +73,9 @@ #define ZYLIN_OPENOCD GIT_OPENOCD_VERSION #define ZYLIN_OPENOCD_VERSION "ZY1000 " ZYLIN_VERSION " " ZYLIN_DATE +#else +/* Assume we're connecting to a revc w/60MHz clock. */ +#define ZYLIN_KHZ 60000 #endif @@ -102,7 +108,7 @@ static int zy1000_khz(int khz, int *jtag_speed) * 64000 / 6 = 10666 * */ - speed = (64000 + (khz -1)) / khz; + speed = (ZYLIN_KHZ + (khz -1)) / khz; speed = (speed + 1 ) / 2; speed *= 2; if (speed > 8190) @@ -123,7 +129,7 @@ static int zy1000_speed_div(int speed, int *khz) } else { - *khz = 64000/speed; + *khz = ZYLIN_KHZ / speed; } return ERROR_OK; @@ -265,7 +271,8 @@ int zy1000_speed(int speed) { if (speed > 8190 || speed < 2) { - LOG_USER("valid ZY1000 jtag_speed=[8190,2]. Divisor is 64MHz / even values between 8190-2, i.e. min 7814Hz, max 32MHz"); + LOG_USER("valid ZY1000 jtag_speed=[8190,2]. With divisor is %dkHz / even values between 8190-2, i.e. min %dHz, max %dMHz", + ZYLIN_KHZ, (ZYLIN_KHZ * 1000) / 8190, ZYLIN_KHZ / (2 * 1000)); return ERROR_INVALID_ARGUMENTS; } |