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ram: rk3399: Add DdrMode

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Add DdrMode structure with associated bit fields.

These would help to reconfigure sdram capabilities during
lpddr4 setup related configs.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <Kever.yang@rock-chips.com>
This commit is contained in:
Jagan Teki 2019-07-16 17:27:06 +05:30 committed by Kever Yang
parent ed77ce728a
commit a735550bb8
2 changed files with 17 additions and 2 deletions
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17
arch/arm/include/asm/arch-rockchip/sdram_rk3399.h
View File

@ -28,6 +28,21 @@ union noc_ddrtimingc0 {
} b;
};
union noc_ddrmode {
u32 d32;
struct {
unsigned autoprecharge : 1;
unsigned bypassfiltering : 1;
unsigned fawbank : 1;
unsigned burstsize : 2;
unsigned mwrsize : 2;
unsigned reserved2 : 1;
unsigned forceorder : 8;
unsigned forceorderstate : 8;
unsigned reserved3 : 8;
} b;
};
struct rk3399_msch_regs {
u32 coreid;
u32 revisionid;
@ -48,7 +63,7 @@ struct rk3399_msch_timings {
u32 ddrtimingb0;
union noc_ddrtimingc0 ddrtimingc0;
u32 devtodev0;
u32 ddrmode;
union noc_ddrmode ddrmode;
u32 agingx0;
};

2
drivers/ram/rockchip/sdram_rk3399.c
View File

@ -1114,7 +1114,7 @@ static void dram_all_config(struct dram_info *dram,
&ddr_msch_regs->ddrtimingc0);
writel(noc_timing->devtodev0,
&ddr_msch_regs->devtodev0);
writel(noc_timing->ddrmode,
writel(noc_timing->ddrmode.d32,
&ddr_msch_regs->ddrmode);
/* rank 1 memory clock disable (dfi_dram_clk_disable = 1) */