Re: [PATCH v4 1/6] hw/misc/aspeed_scu: Skipping dram_init in u-boot

[Cédric Le Goater]

On 3/3/25 08:35, Jamin Lin wrote:

Setting BIT6 in VGA0 SCRATCH register will indicate that the ddr traning
is done, therefore skipping the u-boot-spl dram_init() process.

Signed-off-by: Jamin Lin <jamin_...@aspeedtech.com>
Signed-off-by: Troy Lee <troy_...@aspeedtech.com>

Reviewed-by: Cédric Le Goater <c...@redhat.com>

Thanks,

C.

---
  hw/misc/aspeed_scu.c | 2 ++
  1 file changed, 2 insertions(+)

diff --git a/hw/misc/aspeed_scu.c b/hw/misc/aspeed_scu.c
index bac1441b06..50f74fbabd 100644
--- a/hw/misc/aspeed_scu.c
+++ b/hw/misc/aspeed_scu.c
@@ -157,6 +157,7 @@
  #define AST2700_SCU_FREQ_CNTR       TO_REG(0x3b0)
  #define AST2700_SCU_CPU_SCRATCH_0   TO_REG(0x780)
  #define AST2700_SCU_CPU_SCRATCH_1   TO_REG(0x784)
+#define AST2700_SCU_VGA_SCRATCH_0   TO_REG(0x900)

#define AST2700_SCUIO_CLK_STOP_CTL_1 TO_REG(0x240)

  #define AST2700_SCUIO_CLK_STOP_CLR_1    TO_REG(0x244)
@@ -930,6 +931,7 @@ static const uint32_t 
ast2700_a0_resets[ASPEED_AST2700_SCU_NR_REGS] = {
      [AST2700_SCU_FREQ_CNTR]         = 0x000375eb,
      [AST2700_SCU_CPU_SCRATCH_0]     = 0x00000000,
      [AST2700_SCU_CPU_SCRATCH_1]     = 0x00000004,
+    [AST2700_SCU_VGA_SCRATCH_0]     = 0x00000040,
  };

static void aspeed_ast2700_scu_reset(DeviceState *dev)