[PATCH v2] arm: apple: t602x: Add missing MMIO regions to memmap

[Janne Grunau via B4 Relay]

From: Janne Grunau <j at jannau.net>

The memory maps for Apple's M2 Pro/Max/Ultra left MMIO space out which
was not used by any driver at the time. The display out exposed as
simple-framebuffer use a power-domain controlled by a device in an
unmapped region.
Add a map covering this region as well as another MMIO region in the
range 0x4'0000'0000 - 0x5'0000'0000. The added regions cover all MMIO
annotated in Apple's device tree in this range.

Signed-off-by: Janne Grunau <j at jannau.net>
---
Changes in v2:
- use SZ_1G as block size
- Link to v1: https://lore.kernel.org/r/20231130-apple_t602x_extend_memmap-v1-1-cd96b251d2dc@jannau.net
---
 arch/arm/mach-apple/board.c | 48 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/arch/arm/mach-apple/board.c b/arch/arm/mach-apple/board.c
index 47393babbc..7a6151a972 100644
--- a/arch/arm/mach-apple/board.c
+++ b/arch/arm/mach-apple/board.c
@@ -370,6 +370,22 @@ static struct mm_region t6020_mem_map[] = {
 		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
 			 PTE_BLOCK_NON_SHARE |
 			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
+	}, {
+		/* I/O */
+		.virt = 0x400000000,
+		.phys = 0x400000000,
+		.size = SZ_1G,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			PTE_BLOCK_NON_SHARE |
+			PTE_BLOCK_PXN | PTE_BLOCK_UXN
+	}, {
+		/* I/O */
+		.virt = 0x480000000,
+		.phys = 0x480000000,
+		.size = SZ_1G,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			PTE_BLOCK_NON_SHARE |
+			PTE_BLOCK_PXN | PTE_BLOCK_UXN
 	}, {
 		/* I/O */
 		.virt = 0x580000000,
@@ -471,6 +487,22 @@ static struct mm_region t6022_mem_map[] = {
 		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
 			 PTE_BLOCK_NON_SHARE |
 			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
+	}, {
+		/* I/O */
+		.virt = 0x400000000,
+		.phys = 0x400000000,
+		.size = SZ_1G,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			PTE_BLOCK_NON_SHARE |
+			PTE_BLOCK_PXN | PTE_BLOCK_UXN
+	}, {
+		/* I/O */
+		.virt = 0x480000000,
+		.phys = 0x480000000,
+		.size = SZ_1G,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			PTE_BLOCK_NON_SHARE |
+			PTE_BLOCK_PXN | PTE_BLOCK_UXN
 	}, {
 		/* I/O */
 		.virt = 0x580000000,
@@ -551,6 +583,22 @@ static struct mm_region t6022_mem_map[] = {
 		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
 			 PTE_BLOCK_NON_SHARE |
 			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
+	}, {
+		/* I/O */
+		.virt = 0x2400000000,
+		.phys = 0x2400000000,
+		.size = SZ_1G,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			PTE_BLOCK_NON_SHARE |
+			PTE_BLOCK_PXN | PTE_BLOCK_UXN
+	}, {
+		/* I/O */
+		.virt = 0x2480000000,
+		.phys = 0x2480000000,
+		.size = SZ_1G,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			PTE_BLOCK_NON_SHARE |
+			PTE_BLOCK_PXN | PTE_BLOCK_UXN
 	}, {
 		/* I/O */
 		.virt = 0x2580000000,

---
base-commit: 43f2873fa98b1da6eb56d756315c7bd7db63db27
change-id: 20231130-apple_t602x_extend_memmap-c82c522ca8c0

Best regards,
-- 
Janne Grunau <j at jannau.net>