stlink: add STLINK_F_HAS_JTAG_SET_FREQ

[fw/openocd] / src / jtag / drivers / stlink_usb.c

diff --git a/src/jtag/drivers/stlink_usb.c b/src/jtag/drivers/stlink_usb.c
index 566c3bdbd647c3ddb127bf03e6173ef2da50602a..852fa59a59dc118bc82fc2b6a6e455d66d0ea47c 100644 (file)
--- a/src/jtag/drivers/stlink_usb.c
+++ b/src/jtag/drivers/stlink_usb.c
@@ -279,6 +279,7 @@ enum stlink_mode {
  */
 #define STLINK_F_HAS_TRACE              (1UL << 0)
 #define STLINK_F_HAS_SWD_SET_FREQ       (1UL << 1)
+#define STLINK_F_HAS_JTAG_SET_FREQ      (1UL << 2)
 
 /* aliases */
 #define STLINK_F_HAS_TARGET_VOLT        STLINK_F_HAS_TRACE
@@ -679,6 +680,10 @@ static int stlink_usb_version(void *handle)
                if (h->version.jtag >= 22)
                        flags |= STLINK_F_HAS_SWD_SET_FREQ;
 
+               /* API to set JTAG frequency from J24 */
+               if (h->version.jtag >= 24)
+                       flags |= STLINK_F_HAS_JTAG_SET_FREQ;
+
                break;
        default:
                break;
@@ -758,8 +763,7 @@ static int stlink_usb_set_jtagclk(void *handle, uint16_t clk_divisor)
 
        assert(handle != NULL);
 
-       /* only supported by stlink/v2 and for firmware >= 24 */
-       if (h->version.stlink == 1 || h->version.jtag < 24)
+       if (!(h->version.flags & STLINK_F_HAS_JTAG_SET_FREQ))
                return ERROR_COMMAND_NOTFOUND;
 
        stlink_usb_init_buffer(handle, h->rx_ep, 2);
@@ -2142,8 +2146,8 @@ static int stlink_speed_jtag(void *handle, int khz, bool query)
        int speed_index;
        struct stlink_usb_handle_s *h = handle;
 
-       /* only supported by stlink/v2 and for firmware >= 24 */
-       if (h->version.stlink == 1 || h->version.jtag < 24)
+       /* old firmware cannot change it */
+       if (!(h->version.flags & STLINK_F_HAS_JTAG_SET_FREQ))
                return khz;
 
        speed_index = stlink_match_speed_map(stlink_khz_to_speed_map_jtag,
@@ -2395,8 +2399,7 @@ static int stlink_usb_open(struct hl_interface_param_s *param, void **fd)
        }
 
        if (h->transport == HL_TRANSPORT_JTAG) {
-               /* jtag clock speed only supported by stlink/v2 and for firmware >= 24 */
-               if (h->version.stlink >= 2 && h->version.jtag >= 24) {
+               if (h->version.flags & STLINK_F_HAS_JTAG_SET_FREQ) {
                        stlink_dump_speed_map(stlink_khz_to_speed_map_jtag, ARRAY_SIZE(stlink_khz_to_speed_map_jtag));
                        stlink_speed(h, param->initial_interface_speed, false);
                }