mb/intel/adlrvp: Add 5G WWAN ACPI support for ADL-P RVP

Add FM350GL 5G WWAN support using drivers/wwan/fm and additional PM
features from RTD3.

PCIe root port: 6 (1 based)
clock source & request: 5 (0 based)

GPIOs:
WWAN_PERST_N:   GPPC_C5
WWAN_RST_N:     GPPC_F14
WWAN_FCP_OFF_N: GPPC_F15
WWAN_WAKE_N:    GPPC_D18
WWAN_PWREN:     GPPC_F21
WWAN_DISABLE_N: GPPC_D15
CLKREQ5_WWAN_N: GPPC_H23

TEST=Check SSDT table to see if the PXSX device and PowerResource RTD3
are generated under the root port.

BRANCH=firmware-brya-14505.B

Signed-off-by: Cliff Huang <cliff.huang@intel.com>
Change-Id: I10902245e3a5e05cd2af9030394933e936c25396
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63941
Reviewed-by: Jeremy Compostella <jeremy.compostella@intel.corp-partner.google.com>
Reviewed-by: Anil Kumar K <anil.kumar.k@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Bora Guvendik <bora.guvendik@intel.com>

src/mainboard/intel/adlrvp/Kconfig

@@ -31,6 +31,7 @@ config BOARD_INTEL_ADLRVP_P_EXT_EC
 	select INTEL_LPSS_UART_FOR_CONSOLE
 	select SOC_INTEL_ALDERLAKE_PCH_P
 	select GEN3_EXTERNAL_CLOCK_BUFFER
+	select DRIVERS_WWAN_FM350GL
 
 config BOARD_INTEL_ADLRVP_RPL_EXT_EC
 	select SOC_INTEL_RAPTORLAKE

src/mainboard/intel/adlrvp/early_gpio.c

@@ -6,8 +6,12 @@
 
 /* Early pad configuration in bootblock */
 static const struct pad_config early_gpio_table[] = {
-	/* WWAN_RST# */
+	/* WWAN_RST# (updated in ramstage) */
-	PAD_CFG_GPO(GPP_F14, 0, PLTRST),
+	PAD_CFG_GPO(GPP_F14, 0, DEEP),
+	/* WWAN_PERST_L (updated in ramstage) */
+	PAD_CFG_GPO(GPP_C5, 0, DEEP),
+	/* WWAN_FCPO_L (updated in romstage) */
+	PAD_CFG_GPO(GPP_F15, 0, DEEP),
 	/* WWAN_PWR_EN */
 	PAD_CFG_GPO(GPP_F21, 1, DEEP),
 	/* SMB_CLK */

src/mainboard/intel/adlrvp/gpio.c

@@ -48,13 +48,15 @@ static const struct pad_config gpio_table[] = {
 	/* WWAN WAKE N*/
 	PAD_CFG_GPI_IRQ_WAKE(GPP_D18, NONE, DEEP, LEVEL, INVERT),
 	/* WWAN_DISABLE_N */
-	PAD_CFG_GPO(GPP_D15, 1, PLTRST),
+	PAD_CFG_GPO(GPP_D15, 1, DEEP),
 	/* WWAN_RST# */
-	PAD_CFG_GPO(GPP_F14, 1, PLTRST),
+	PAD_CFG_GPO(GPP_F14, 1, DEEP),
+	/* WWAN_FCP_OFF_N */
+	PAD_CFG_GPO(GPP_F15, 1, DEEP),
 	/* WWAN_PWR_EN */
 	PAD_CFG_GPO(GPP_F21, 1, DEEP),
 	/* WWAN_PERST# */
-	PAD_CFG_GPO(GPP_C5, 1, PLTRST),
+	PAD_CFG_GPO(GPP_C5, 1, DEEP),
 	/* PEG_SLOT_WAKE_N */
 	PAD_CFG_GPI(GPP_A20, NONE, PLTRST),
 	/* CAM CONN1 CLKEN */
@@ -257,7 +259,8 @@ static const struct pad_config gpio_table[] = {
 	PAD_CFG_NF(GPP_H20, NONE, DEEP, NF1),
 	PAD_CFG_NF(GPP_H21, NONE, DEEP, NF1),
 	PAD_CFG_NF(GPP_H22, NONE, DEEP, NF1),
-	PAD_NC(GPP_H23, NONE),
+	/* H23 : CLKREQ5_WWAN_N */
+	PAD_CFG_NF(GPP_H23, NONE, DEEP, NF1),
 
 	/* A21 : HDMI CRLS CTRLCLK */
 	PAD_CFG_NF(GPP_A21, NONE, DEEP, NF1),

src/mainboard/intel/adlrvp/variants/adlrvp_p_ext_ec/overridetree.cb

@@ -57,5 +57,32 @@ chip soc/intel/alderlake
 				end
 			end
 		end
+		device ref pcie_rp6 on
+			# Enable WWAN PCIE 6 using clk 5
+			register "pch_pcie_rp[PCH_RP(6)]" = "{
+				.clk_src = 5,
+				.clk_req = 5,
+				.flags = PCIE_RP_LTR | PCIE_RP_AER,
+			}"
+			chip soc/intel/common/block/pcie/rtd3
+				register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C5)"
+				register "reset_off_delay_ms" = "20"
+				register "srcclk_pin" = "5"
+				register "ext_pm_support" = "ACPI_PCIE_RP_EMIT_ALL"
+				register "skip_on_off_support" = "true"
+				device generic 0 alias rp6_rtd3 on
+				end
+			end
+			chip drivers/wwan/fm
+				register "fcpo_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_F15)"
+				register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_F14)"
+				register "perst_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C5)"
+				register "wake_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_D18)"
+				register "add_acpi_dma_property" = "true"
+				use rp6_rtd3 as rtd3dev
+				device generic 0 on
+				end
+			end
+		end
 	end
 end