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stlink: add STLINK_F_HAS_SWD_SET_FREQ 

Change-Id: Ibba786c7e18bf15a04b85a2071c79f631a252ccf
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/4709
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Tested-by: Spencer Oliver <spen@spen-soft.co.uk>
This commit is contained in:
Antonio Borneo 2018-09-23 15:15:57 +02:00 committed by Spencer Oliver
parent ab9221f805
commit d705389f67
1 changed files with 9 additions and 6 deletions
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15
src/jtag/drivers/stlink_usb.c
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@ -278,6 +278,7 @@ enum stlink_mode {
* version of stlink * version of stlink
*/ */
#define STLINK_F_HAS_TRACE (1UL << 0) #define STLINK_F_HAS_TRACE (1UL << 0)
#define STLINK_F_HAS_SWD_SET_FREQ (1UL << 1)
/* aliases */ /* aliases */
#define STLINK_F_HAS_TARGET_VOLT STLINK_F_HAS_TRACE #define STLINK_F_HAS_TARGET_VOLT STLINK_F_HAS_TRACE
@ -674,6 +675,10 @@ static int stlink_usb_version(void *handle)
if (h->version.jtag >= 13) if (h->version.jtag >= 13)
flags |= STLINK_F_HAS_TRACE; flags |= STLINK_F_HAS_TRACE;
/* API to set SWD frequency from J22 */
if (h->version.jtag >= 22)
flags |= STLINK_F_HAS_SWD_SET_FREQ;
break; break;
default: default:
break; break;
@ -729,8 +734,7 @@ static int stlink_usb_set_swdclk(void *handle, uint16_t clk_divisor)
assert(handle != NULL); assert(handle != NULL);
/* only supported by stlink/v2 and for firmware >= 22 */ if (!(h->version.flags & STLINK_F_HAS_SWD_SET_FREQ))
if (h->version.stlink == 1 || h->version.jtag < 22)
return ERROR_COMMAND_NOTFOUND; return ERROR_COMMAND_NOTFOUND;
stlink_usb_init_buffer(handle, h->rx_ep, 2); stlink_usb_init_buffer(handle, h->rx_ep, 2);
@ -2115,8 +2119,8 @@ static int stlink_speed_swd(void *handle, int khz, bool query)
int speed_index; int speed_index;
struct stlink_usb_handle_s *h = handle; struct stlink_usb_handle_s *h = handle;
/* only supported by stlink/v2 and for firmware >= 22 */ /* old firmware cannot change it */
if (h->version.stlink == 1 || h->version.jtag < 22) if (!(h->version.flags & STLINK_F_HAS_SWD_SET_FREQ))
return khz; return khz;
speed_index = stlink_match_speed_map(stlink_khz_to_speed_map_swd, speed_index = stlink_match_speed_map(stlink_khz_to_speed_map_swd,
@ -2397,8 +2401,7 @@ static int stlink_usb_open(struct hl_interface_param_s *param, void **fd)
stlink_speed(h, param->initial_interface_speed, false); stlink_speed(h, param->initial_interface_speed, false);
} }
} else if (h->transport == HL_TRANSPORT_SWD) { } else if (h->transport == HL_TRANSPORT_SWD) {
/* clock speed only supported by stlink/v2 and for firmware >= 22 */ if (h->version.flags & STLINK_F_HAS_SWD_SET_FREQ) {
if (h->version.stlink >= 2 && h->version.jtag >= 22) {
stlink_dump_speed_map(stlink_khz_to_speed_map_swd, ARRAY_SIZE(stlink_khz_to_speed_map_swd)); stlink_dump_speed_map(stlink_khz_to_speed_map_swd, ARRAY_SIZE(stlink_khz_to_speed_map_swd));
stlink_speed(h, param->initial_interface_speed, false); stlink_speed(h, param->initial_interface_speed, false);
} }