From: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Date: Tue, 9 Jun 2026 14:39:52 +0000 (+0530)
Subject: platform/x86/amd/pmc: Add PMC driver support for AMD 1Ah M80H SoC
X-Git-Url: http://git.ipfire.org/index.cgi?a=commitdiff_plain;h=043af31c8d3031bbeb77dfdc6373005ef3b8a23b;p=thirdparty%2Fkernel%2Flinux.git

platform/x86/amd/pmc: Add PMC driver support for AMD 1Ah M80H SoC

The 1Ah M80H SoC uses a different set of SMU mailbox register offsets
compared to the existing 1Ah variants: message at 0xA10, argument at
0xA18, and response at 0xA14.

Add amd_1ah_m80_cpu_info with these offsets, wire it into the PCI ID
table via PCI_DEVICE_DATA(), populate scratch_reg field with
AMD_PMC_SCRATCH_REG_1AH and add the corresponding ACPI ID AMDI000C.

Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Co-developed-by: Sanket Goswami <Sanket.Goswami@amd.com>
Signed-off-by: Sanket Goswami <Sanket.Goswami@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://patch.msgid.link/20260609143952.2999707-3-Shyam-sundar.S-k@amd.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---

diff --git a/drivers/platform/x86/amd/pmc/pmc.c b/drivers/platform/x86/amd/pmc/pmc.c
index 92e36a6161a95..ccb37383b3377 100644
--- a/drivers/platform/x86/amd/pmc/pmc.c
+++ b/drivers/platform/x86/amd/pmc/pmc.c
@@ -154,6 +154,16 @@ static const struct amd_pmc_cpu_info amd_1ah_m70_cpu_info = {
 	.os_hint	= MSG_OS_HINT_RN,
 };
 
+static const struct amd_pmc_cpu_info amd_1ah_m80_cpu_info = {
+	.smu_msg	= AMD_PMC_REGISTER_MSG_1AH_80H,
+	.smu_arg	= AMD_PMC_REGISTER_ARG_1AH_80H,
+	.smu_rsp	= AMD_PMC_REGISTER_RSP_1AH_80H,
+	.num_ips	= ARRAY_SIZE(soc15_ip_blk),
+	.scratch_reg	= AMD_PMC_SCRATCH_REG_1AH,
+	.ips_ptr	= soc15_ip_blk,
+	.os_hint	= MSG_OS_HINT_RN,
+};
+
 static const struct pci_device_id pmc_pci_ids[] = {
 	{ PCI_DEVICE_DATA(AMD, CPU_ID_PCO, &amd_pco_cpu_info) },
 	{ PCI_DEVICE_DATA(AMD, CPU_ID_CZN, &amd_czn_cpu_info) },
@@ -165,6 +175,7 @@ static const struct pci_device_id pmc_pci_ids[] = {
 	{ PCI_DEVICE_DATA(AMD, CPU_ID_SHP, NULL) },
 	{ PCI_DEVICE_DATA(AMD, 1AH_M20H_ROOT, NULL) },
 	{ PCI_DEVICE_DATA(AMD, 1AH_M60H_ROOT, NULL) },
+	{ PCI_DEVICE_DATA(AMD, 1AH_M80H_ROOT, &amd_1ah_m80_cpu_info) },
 	{ }
 };
 
@@ -860,6 +871,7 @@ static const struct acpi_device_id amd_pmc_acpi_ids[] = {
 	{"AMDI0009", 0},
 	{"AMDI000A", 0},
 	{"AMDI000B", 0},
+	{"AMDI000C", 0},
 	{"AMD0004", 0},
 	{"AMD0005", 0},
 	{ }
diff --git a/drivers/platform/x86/amd/pmc/pmc.h b/drivers/platform/x86/amd/pmc/pmc.h
index 616faddc70b75..36756e25b4bd1 100644
--- a/drivers/platform/x86/amd/pmc/pmc.h
+++ b/drivers/platform/x86/amd/pmc/pmc.h
@@ -22,6 +22,11 @@
 /* SMU communication registers for 1Ah 20h SoC */
 #define AMD_PMC_REGISTER_MSG_1AH_20H	0x938
 
+/* SMU communication registers for 1Ah 80h SoC */
+#define AMD_PMC_REGISTER_MSG_1AH_80H	0xA10
+#define AMD_PMC_REGISTER_ARG_1AH_80H	0xA18
+#define AMD_PMC_REGISTER_RSP_1AH_80H	0xA14
+
 /* PMC Scratch Registers */
 #define AMD_PMC_SCRATCH_REG_CZN		0x94
 #define AMD_PMC_SCRATCH_REG_YC		0xD14
@@ -186,6 +191,7 @@ void amd_mp2_stb_deinit(struct amd_pmc_dev *dev);
 
 #define PCI_DEVICE_ID_AMD_1AH_M20H_ROOT		0x1507
 #define PCI_DEVICE_ID_AMD_1AH_M60H_ROOT		0x1122
+#define PCI_DEVICE_ID_AMD_1AH_M80H_ROOT		0x115b
 #define PCI_DEVICE_ID_AMD_MP2_STB		0x172c
 
 int amd_stb_s2d_init(struct amd_pmc_dev *dev);