scripts: genpinctrl: fix F1 generation for pins not in IP file

When working with F1 series pins not present in the GPIO IP files need
to be taken into account with the NO_REMAP setting.

Signed-off-by: Gerard Marull-Paretas <gerard@teslabs.com>

scripts/genpinctrl/genpinctrl.py

@@ -410,6 +410,9 @@ def get_mcu_signals(cube_path, gpio_ip_afs):
                     pin_af = None
                 elif signal_name in pin_afs:
                     pin_af = pin_afs[signal_name]
+                # STM32F1: assume NO_REMAP (af=0) if signal is not listed in pin_afs
+                elif family == "STM32F1":
+                    pin_af = 0
                 else:
                     continue
 

scripts/tests/genpinctrl/data/cubemx/db/mcu/STM32F1TESTDIE.xml

@@ -9,5 +9,7 @@
         <Signal Name="UART1_RX"/>
         <!-- Valid signal (analog) -->
         <Signal Name="ADC1_IN0"/>
+        <!-- Valid signal (not in GPIO IP file) -->
+        <Signal Name="I2C2_SCL"/>
     </Pin>
 </Mcu>

scripts/tests/genpinctrl/data/stm32f1testdie-pinctrl.dtsi

@@ -16,6 +16,13 @@
 				pinmux = <STM32F1_PINMUX('A', 0, ANALOG, NO_REMAP)>;
 			};
 
+			/* I2C_SCL */
+
+			i2c2_scl_pa0: i2c2_scl_pa0 {
+				pinmux = <STM32F1_PINMUX('A', 0, ALTERNATE, NO_REMAP)>;
+				drive-open-drain;
+			};
+
 			/* UART_RX / USART_RX */
 
 			uart1_rx_pa0: uart1_rx_pa0 {

scripts/tests/genpinctrl/test_genpinctrl.py

@@ -207,6 +207,7 @@ def test_get_mcu_signals(cubemx):
                             {"name": "UART1_TX", "af": 0},
                             {"name": "UART1_RX", "af": 1},
                             {"name": "ADC1_IN0", "af": None},
+                            {"name": "I2C2_SCL", "af": 0},
                         ],
                     },
                 ],