google/gru: Support Nefario rev0

Do not assert GPIO1_B3 otherwise BT would be disabled on Nefario.
Also, remove DVS support for CENTERLOGIC.

BUG=b:64702054, b:63537905
TEST=build coreboot

Change-Id: I350db2c080f2e41ae56413f5f895557978ef0ba8
Signed-off-by: Philip Chen <philipchen@google.com>
Reviewed-on: https://review.coreboot.org/21176
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>

src/mainboard/google/gru/Kconfig

@@ -25,6 +25,16 @@ config GRU_HAS_TPM2
 	default n if BOARD_GOOGLE_KEVIN
 	default y
 
+config GRU_HAS_CENTERLOG_PWM
+	bool
+	default y if BOARD_GOOGLE_GRU || BOARD_GOOGLE_KEVIN || BOARD_GOOGLE_BOB
+	default n
+
+config GRU_HAS_WLAN_RESET
+	bool
+	default y if BOARD_GOOGLE_GRU || BOARD_GOOGLE_KEVIN || BOARD_GOOGLE_BOB
+	default n
+
 config BOARD_SPECIFIC_OPTIONS
 	def_bool y
 	select BOARD_ID_AUTO

src/mainboard/google/gru/board.h

@@ -33,7 +33,6 @@
 #define GPIO_P30V_EN	dead_code_t(gpio_t, "PP3000 doesn't exist on Scarlet")
 #define GPIO_TP_RST_L	dead_code_t(gpio_t, "don't need TP_RST_L on Scarlet")
 #define GPIO_TPM_IRQ	GPIO(1, C, 1)
-#define GPIO_WLAN_RST_L	dead_code_t(gpio_t, "no WLAN reset on Scarlet in FW")
 #define GPIO_WP		GPIO(0, B, 5)
 #else
 #define GPIO_BACKLIGHT	GPIO(1, C, 1)
@@ -44,10 +43,15 @@
 #define GPIO_P30V_EN	GPIO(0, B, 4)
 #define GPIO_TP_RST_L	GPIO(3, B, 4)	/* may also be an I2C pull-up enable */
 #define GPIO_TPM_IRQ	GPIO(0, A, 5)
-#define GPIO_WLAN_RST_L	GPIO(1, B, 3)
 #define GPIO_WP		GPIO(1, C, 2)
 #endif
 
+#if IS_ENABLED(CONFIG_GRU_HAS_WLAN_RESET)
+#define GPIO_WLAN_RST_L	GPIO(1, B, 3)
+#else
+#define GPIO_WLAN_RST_L	dead_code_t(gpio_t, "no WLAN reset on this board in FW")
+#endif
+
 void setup_chromeos_gpios(void);
 
 #endif  /* ! __COREBOOT_SRC_MAINBOARD_GOOGLE_GRU_BOARD_H */

src/mainboard/google/gru/mainboard.c

@@ -44,7 +44,7 @@ static void configure_touchpad(void)
 /*
  * Wifi's PDN/RST line is pulled down by its (unpowered) voltage rails, but
  * this reset pin is pulled up by default. Let's drive it low as early as we
- * can. Scarlet uses a different WiFi chip that doesn't have this pin anymore.
+ * can. This only applies to boards with Marvell 8997 WiFi.
  */
 static void assert_wifi_reset(void)
 {
@@ -349,8 +349,9 @@ static void mainboard_init(device_t dev)
 	if (display_init_required())
 		configure_display();
 	setup_usb(0);
+	if (IS_ENABLED(CONFIG_GRU_HAS_WLAN_RESET))
+		assert_wifi_reset();
 	if (!IS_ENABLED(CONFIG_BOARD_GOOGLE_SCARLET)) {
-		assert_wifi_reset();		/* Scarlet: no WIFI_PD# line */
 		configure_touchpad();		/* Scarlet: works differently */
 		setup_usb(1);			/* Scarlet: only one USB port */
 		register_gpio_suspend();	/* Scarlet: all EC-controlled */

src/mainboard/google/gru/pwm_regulator.c

@@ -40,7 +40,7 @@ int kevin6_pwm_design_voltage[][2] = {
 	[PWM_REGULATOR_CENTERLOG] = {8001, 10497}
 };
 
-/* Applies for Gru rev2+ and Bob. */
+/* Applies for Gru rev2+, Bob, and Nefario. */
 int pwm_design_voltage[][2] = {
 	[PWM_REGULATOR_GPU] = {7864, 12177},
 	[PWM_REGULATOR_BIG] = {8001, 13022},
@@ -58,12 +58,15 @@ int scarlet_pwm_design_voltage[][2] = {
 int pwm_enum_to_pwm_number[] = {
 	[PWM_REGULATOR_GPU] = 0,
 	[PWM_REGULATOR_LIT] = 2,
+#if IS_ENABLED(CONFIG_GRU_HAS_CENTERLOG_PWM)
+	[PWM_REGULATOR_CENTERLOG] = 3,
+#else
+	[PWM_REGULATOR_CENTERLOG] = -1,
+#endif
 #if IS_ENABLED(CONFIG_BOARD_GOOGLE_SCARLET)
 	[PWM_REGULATOR_BIG] = 3,
-	[PWM_REGULATOR_CENTERLOG] = -1,	/* fixed regulator on Scarlet */
 #else
 	[PWM_REGULATOR_BIG] = 1,
-	[PWM_REGULATOR_CENTERLOG] = 3,
 #endif
 };
 

src/mainboard/google/gru/romstage.c

@@ -41,11 +41,13 @@ static void init_dvs_outputs(void)
 	pwm_regulator_configure(PWM_REGULATOR_GPU, 900);
 	pwm_regulator_configure(PWM_REGULATOR_BIG, 900);
 
-	/* Kevin's logic rail has some ripple, so up the voltage a bit. Scarlet
-	   uses a fixed 900mV regulator for centerlogic. */
+	/*
+	 * Kevin's logic rail has some ripple, so up the voltage a bit. Newer
+	 * boards use a fixed 900mV regulator for centerlogic.
+	 */
 	if (IS_ENABLED(CONFIG_BOARD_GOOGLE_KEVIN))
 		pwm_regulator_configure(PWM_REGULATOR_CENTERLOG, 925);
-	else if (!IS_ENABLED(CONFIG_BOARD_GOOGLE_SCARLET))
+	else if (IS_ENABLED(CONFIG_GRU_HAS_CENTERLOG_PWM))
 		pwm_regulator_configure(PWM_REGULATOR_CENTERLOG, 900);
 
 	/* Allow time for the regulators to settle */