diff options
| author | Conor Dooley <conor.dooley@microchip.com> | 2023-06-17 19:08:14 +0100 |
|---|---|---|
| committer | Conor Dooley <conor.dooley@microchip.com> | 2023-06-17 19:19:21 +0100 |
| commit | c1362fd0f2fdebf5c56d505100ba37600b5c20a5 (patch) | |
| tree | d20854c0f267807ecb3aeab41bacd51543b7ab93 /drivers/gpu/drm/ast/ast_main.c | |
| parent | e2c510d6d630fe6593a0cf87531913b4b08ebeb1 (diff) | |
| parent | 318afa0812049ddaff644482b035ab861d2a920c (diff) | |
Merge patch series "Add Sipeed Lichee Pi 4A RISC-V board support"
Jisheng Zhang <jszhang@kernel.org> says:
Sipeed's Lichee Pi 4A development board uses Lichee Module 4A core
module which is powered by T-HEAD's TH1520 SoC. Add minimal device
tree files for the core module and the development board.
Support basic uart/gpio/dmac drivers, so supports booting to a basic
shell.
This also pulls in -rc2, because of some maintainers re-jigging that
went on in the interim in commit 80e62bc8487b ("MAINTAINERS: re-sort
all entries and fields").
Link: https://lore.kernel.org/r/20230617161529.2092-1-jszhang@kernel.org
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Diffstat (limited to 'drivers/gpu/drm/ast/ast_main.c')
| -rw-r--r-- | drivers/gpu/drm/ast/ast_main.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/gpu/drm/ast/ast_main.c b/drivers/gpu/drm/ast/ast_main.c index 794ffd4a29c5..f32ce29edba7 100644 --- a/drivers/gpu/drm/ast/ast_main.c +++ b/drivers/gpu/drm/ast/ast_main.c @@ -425,11 +425,12 @@ struct ast_device *ast_device_create(const struct drm_driver *drv, return ERR_PTR(-EIO); /* - * If we don't have IO space at all, use MMIO now and - * assume the chip has MMIO enabled by default (rev 0x20 - * and higher). + * After AST2500, MMIO is enabled by default, and it should be adopted + * to be compatible with Arm. */ - if (!(pci_resource_flags(pdev, 2) & IORESOURCE_IO)) { + if (pdev->revision >= 0x40) { + ast->ioregs = ast->regs + AST_IO_MM_OFFSET; + } else if (!(pci_resource_flags(pdev, 2) & IORESOURCE_IO)) { drm_info(dev, "platform has no IO space, trying MMIO\n"); ast->ioregs = ast->regs + AST_IO_MM_OFFSET; } |