From: Janne Grunau j@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@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-cd96b251d2... --- 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,