soc/amd/morgana: Enable GPP clk req disabling

Enable GPP clk req disabling on morgana after reviewing against morgana
ppr #57396, rev 1.52

Signed-off-by: Fred Reitberger <reitbergerfred@gmail.com>
Change-Id: Id2502137486df7a8b0ac6a4b3e061b25b23e2e51
Reviewed-on: https://review.coreboot.org/c/coreboot/+/70465
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

4 files changed, 12 insertions, 16 deletions

diff --git a/src/soc/amd/morgana/Kconfig b/src/soc/amd/morgana/Kconfig
index 6e6033bab9..ec0572ca01 100644
--- a/src/soc/amd/morgana/Kconfig
+++ b/src/soc/amd/morgana/Kconfig
@@ -61,9 +61,10 @@ config SOC_SPECIFIC_OPTIONS
 	select SOC_AMD_COMMON_BLOCK_LPC			# TODO: Check if this is still correct
 	select SOC_AMD_COMMON_BLOCK_MCAX
 	select SOC_AMD_COMMON_BLOCK_NONCAR
-	select SOC_AMD_COMMON_BLOCK_PCI			# TODO: Check if this is still correct
-	select SOC_AMD_COMMON_BLOCK_PCI_MMCONF		# TODO: Check if this is still correct
-	select SOC_AMD_COMMON_BLOCK_PCIE_GPP_DRIVER	# TODO: Check if this is still correct
+	select SOC_AMD_COMMON_BLOCK_PCI
+	select SOC_AMD_COMMON_BLOCK_PCI_MMCONF
+	select SOC_AMD_COMMON_BLOCK_PCIE_GPP_DRIVER
+	select SOC_AMD_COMMON_BLOCK_PCIE_CLK_REQ
 	select SOC_AMD_COMMON_BLOCK_PM
 	select SOC_AMD_COMMON_BLOCK_PM_CHIPSET_STATE_SAVE
 	select SOC_AMD_COMMON_BLOCK_PSP_GEN2		# TODO: Check if this is still correct
diff --git a/src/soc/amd/morgana/chip.h b/src/soc/amd/morgana/chip.h
index 8875c5e83d..cceea10c7e 100644
--- a/src/soc/amd/morgana/chip.h
+++ b/src/soc/amd/morgana/chip.h
@@ -7,6 +7,7 @@
 
 #include <amdblocks/chip.h>
 #include <amdblocks/i2c.h>
+#include <amdblocks/pci_clk_req.h>
 #include <gpio.h>
 #include <soc/i2c.h>
 #include <soc/southbridge.h>
@@ -92,11 +93,7 @@ struct soc_amd_morgana_config {
 
 	/* The array index is the general purpose PCIe clock output number. Values in here
 	   aren't the values written to the register to have the default to be always on. */
-	enum {
-		GPP_CLK_ON,	/* GPP clock always on; default */
-		GPP_CLK_REQ,	/* GPP clock controlled by corresponding #CLK_REQx pin */
-		GPP_CLK_OFF,	/* GPP clk off */
-	} gpp_clk_config[GPP_CLK_OUTPUT_AVAILABLE];
+	enum gpp_clk_req gpp_clk_config[GPP_CLK_OUTPUT_AVAILABLE];
 
 	/* performance policy for the PCIe links: power consumption vs. link speed */
 	enum {
diff --git a/src/soc/amd/morgana/fch.c b/src/soc/amd/morgana/fch.c
index 08fbe9816e..b740f47942 100644
--- a/src/soc/amd/morgana/fch.c
+++ b/src/soc/amd/morgana/fch.c
@@ -1,11 +1,10 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
-/* TODO: Update for Morgana */
-
 #include <amdblocks/acpi.h>
 #include <amdblocks/acpimmio.h>
 #include <amdblocks/amd_pci_util.h>
 #include <amdblocks/gpio.h>
+#include <amdblocks/pci_clk_req.h>
 #include <amdblocks/smi.h>
 #include <assert.h>
 #include <bootstate.h>
@@ -125,7 +124,7 @@ static void fch_init_acpi_ports(void)
 /* configure the general purpose PCIe clock outputs according to the devicetree settings */
 static void gpp_clk_setup(void)
 {
-	const struct soc_amd_morgana_config *cfg = config_of_soc();
+	struct soc_amd_morgana_config *cfg = config_of_soc();
 
 	/* look-up table to be able to iterate over the PCIe clock output settings */
 	const uint8_t gpp_clk_shift_lut[GPP_CLK_OUTPUT_COUNT] = {
@@ -140,6 +139,8 @@ static void gpp_clk_setup(void)
 
 	uint32_t gpp_clk_ctl = misc_read32(GPP_CLK_CNTRL);
 
+	pcie_gpp_dxio_update_clk_req_config(&cfg->gpp_clk_config[0],
+					    ARRAY_SIZE(cfg->gpp_clk_config));
 	for (int i = 0; i < GPP_CLK_OUTPUT_COUNT; i++) {
 		gpp_clk_ctl &= ~GPP_CLK_REQ_MASK(gpp_clk_shift_lut[i]);
 		/*
diff --git a/src/soc/amd/morgana/include/soc/southbridge.h b/src/soc/amd/morgana/include/soc/southbridge.h
index 216bf42677..b64d38a8f7 100644
--- a/src/soc/amd/morgana/include/soc/southbridge.h
+++ b/src/soc/amd/morgana/include/soc/southbridge.h
@@ -1,7 +1,5 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
-/* TODO: Update for Morgana */
-
 #ifndef AMD_MORGANA_SOUTHBRIDGE_H
 #define AMD_MORGANA_SOUTHBRIDGE_H
 
@@ -13,7 +11,7 @@
 #define PM_PCI_CTRL			0x08
 #define   FORCE_SLPSTATE_RETRY		BIT(25)
 #define PWR_RESET_CFG			0x10
-#define   TOGGLE_ALL_PWR_GOOD		(1 << 1)
+#define   TOGGLE_ALL_PWR_GOOD		BIT(1)
 #define PM_SERIRQ_CONF			0x54
 #define   PM_SERIRQ_NUM_BITS_17		0x0000
 #define   PM_SERIRQ_NUM_BITS_18		0x0004
@@ -61,7 +59,6 @@
 #define   PM_ACPI_SW_S5PWRMUX		BIT(16)
 #define   PM_ACPI_EN_SHUTDOWN_MSG	BIT(17)
 #define   PM_ACPI_EN_SYNC_FLOOD		BIT(18)
-#define   PM_ACPI_FORCE_SPIUSEPIN_0	BIT(19)
 #define   PM_ACPI_EN_DF_INTRWAKE	BIT(20)
 #define   PM_ACPI_MASK_USB_S5_RST	BIT(21)
 #define   PM_ACPI_USE_RSMU_RESET	BIT(22)
@@ -96,7 +93,7 @@
 #define   GPP_CLK5_REQ_SHIFT		10
 #define   GPP_CLK6_REQ_SHIFT		12
 #define     GPP_CLK_OUTPUT_COUNT	7
-#define     GPP_CLK_OUTPUT_AVAILABLE	4
+#define     GPP_CLK_OUTPUT_AVAILABLE	7
 #define   GPP_CLK_REQ_MASK(clk_shift)	(0x3 << (clk_shift))
 #define   GPP_CLK_REQ_ON(clk_shift)	(0x3 << (clk_shift))
 #define   GPP_CLK_REQ_EXT(clk_shift)	(0x1 << (clk_shift))