Platform/RaspberryPi/ConfigDxe: Fix JTAG Pinout for Pi3/4

Updated the pinout to match the Pi4 datasheet, tested with the RPi4. RPi3 Datasheet has same pinout. Signed-off-by: Jeff Booher-Kaeding <[email protected]> Reviewed-by: Samer El-Haj-Mahmoud <[email protected]> Reviewed-by: Pete Batard <[email protected]>
tianocore · Oct 5, 2020 · 8ef23e8 · 8ef23e8
1 parent fc49849
commit 8ef23e8
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c b/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c
@@ -562,22 +562,22 @@ ApplyVariables (
    * 1           VREF        N/A               1
    * 3           nTRST       GPIO22    ALT4    15
    * 4           GND         N/A               9
-   * 5           TDI         GPIO4     ALT5    7
+   * 5           TDI         GPIO26    ALT4    37
    * 7           TMS         GPIO27    ALT4    13
    * 9           TCK         GPIO25    ALT4    22
    * 11          RTCK        GPIO23    ALT4    16
    * 13          TDO         GPIO24    ALT4    18
    */
   if (PcdGet32 (PcdDebugEnableJTAG)) {
     GpioPinFuncSet (22, GPIO_FSEL_ALT4);
-    GpioPinFuncSet (4, GPIO_FSEL_ALT5);
+    GpioPinFuncSet (26, GPIO_FSEL_ALT4);
     GpioPinFuncSet (27, GPIO_FSEL_ALT4);
     GpioPinFuncSet (25, GPIO_FSEL_ALT4);
     GpioPinFuncSet (23, GPIO_FSEL_ALT4);
     GpioPinFuncSet (24, GPIO_FSEL_ALT4);
   } else {
     GpioPinFuncSet (22, GPIO_FSEL_INPUT);
-    GpioPinFuncSet (4, GPIO_FSEL_INPUT);
+    GpioPinFuncSet (26, GPIO_FSEL_INPUT);
     GpioPinFuncSet (27, GPIO_FSEL_INPUT);
     GpioPinFuncSet (25, GPIO_FSEL_INPUT);
     GpioPinFuncSet (23, GPIO_FSEL_INPUT);