From b708294322745ce30035d960a1118b4b8d857120 Mon Sep 17 00:00:00 2001 From: Chen-Yu Tsai Date: Wed, 25 Mar 2026 00:43:54 +0800 Subject: [PATCH] soc: sunxi: sram: Add H616 SRAM regions The Allwinner H616 has two switchable peripheral SRAM regions: - The VE SRAM is a 2 MB dedicated SRAM for the Video Engine. CPU access to this region is enabled by default. CPU access can be disabled, after which reads will show the same stale value for all addresses, while writes are ignored. The mux value for this region is different from previous generations. - The SRAM C region is an alias of the first 128 KB of VE SRAM, plus 64 KB of DE SRAM. The latter is otherwise unaccessible from the CPU. When CPU access is disabled, the whole region reads as zero, while writes are ignored. The mux value for this region is the same as on the A64 and H6. Add data for the VE SRAM. The register values were taken from the BSP vendor kernel. Reviewed-by: Jernej Skrabec Link: https://patch.msgid.link/20260324164357.1607247-7-wens@kernel.org Signed-off-by: Chen-Yu Tsai --- drivers/soc/sunxi/sunxi_sram.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/soc/sunxi/sunxi_sram.c b/drivers/soc/sunxi/sunxi_sram.c index 4d81897179e7..2ccaeacf8c70 100644 --- a/drivers/soc/sunxi/sunxi_sram.c +++ b/drivers/soc/sunxi/sunxi_sram.c @@ -83,6 +83,12 @@ static struct sunxi_sram_desc sun50i_a64_sram_c = { SUNXI_SRAM_MAP(0, 1, "de2")), }; +static struct sunxi_sram_desc sun50i_h616_ve_sram = { + .data = SUNXI_SRAM_DATA("VE", 0x0, 0, 1, + SUNXI_SRAM_MAP(1, 0, "cpu"), + SUNXI_SRAM_MAP(0, 1, "ve")), +}; + static const struct of_device_id sunxi_sram_dt_ids[] = { { .compatible = "allwinner,sun4i-a10-sram-a3-a4", @@ -100,6 +106,10 @@ static const struct of_device_id sunxi_sram_dt_ids[] = { .compatible = "allwinner,sun50i-a64-sram-c", .data = &sun50i_a64_sram_c.data, }, + { + .compatible = "allwinner,sun50i-h616-ve-sram", + .data = &sun50i_h616_ve_sram.data, + }, {} };