Re: [PATCH] arm: exynos: Map iRAM APM area for Exynos850 SoC

Hi,

On Sun, 26 May 2024 at 06:53, Sam Protsenko semen.protsenko@linaro.org wrote:

This iRAM APM area is needed for I3C access to PMIC via APM block. Without this mapping any access to APM iRAM leads to "Synchronous Abort" exception.

Signed-off-by: Sam Protsenko semen.protsenko@linaro.org

arch/arm/mach-exynos/mmu-arm64.c | 8 ++++++++ 1 file changed, 8 insertions(+)

diff --git a/arch/arm/mach-exynos/mmu-arm64.c b/arch/arm/mach-exynos/mmu-arm64.c index 30e522804fbf..4c154950f73b 100644 --- a/arch/arm/mach-exynos/mmu-arm64.c +++ b/arch/arm/mach-exynos/mmu-arm64.c @@ -101,6 +101,14 @@ struct mm_region *mem_map = exynos7880_mem_map;

static struct mm_region exynos850_mem_map[] = { {

•           /* iRAM */
  

•           .virt = 0x02000000UL,
  

•           .phys = 0x02000000UL,
  

•           .size = SZ_2M,
  

•           .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRE) |
  

•                    PTE_BLOCK_NON_SHARE |
  

•                    PTE_BLOCK_PXN | PTE_BLOCK_UXN
  

•   }, {
            /* Peripheral block */
            .virt = 0x10000000UL,
            .phys = 0x10000000UL,
  

-- 2.39.2

applied to u-boot-samsung.