Don't deconfigure GPIO16/17 in Pico D4

Author: s-hadinger

Diff for: cores/esp32/esp32-hal-psram.c

@@ -53,7 +53,7 @@ bool psramInit(){
 #if CONFIG_IDF_TARGET_ESP32
     uint32_t chip_ver = REG_GET_FIELD(EFUSE_BLK0_RDATA3_REG, EFUSE_RD_CHIP_VER_PKG);
     uint32_t pkg_ver = chip_ver & 0x7;
-    if (pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32D2WDQ5 || pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32PICOD2 || pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32PICOD4) {
+    if (pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32D2WDQ5 || pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32PICOD2) {
         spiramFailed = true;
         log_w("PSRAM not supported!");
         return false;
@@ -67,8 +67,10 @@ bool psramInit(){
         spiramFailed = true;
         log_w("PSRAM init failed!");
 #if CONFIG_IDF_TARGET_ESP32
-        pinMatrixOutDetach(16, false, false);
-        pinMatrixOutDetach(17, false, false);
+        if (pkg_ver != EFUSE_RD_CHIP_VER_PKG_ESP32PICOD4) {
+            pinMatrixOutDetach(16, false, false);
+            pinMatrixOutDetach(17, false, false);
+        }
 #endif
         return false;
     }