ram: rk3399: Add ddrtimingC0

Add DdrTimingC0 structure with associated bit fields.

These would help to reconfigure sdram capabilities during
lpddr4 setup related configs.
Signed-off-by: NJagan Teki <jagan@amarulasolutions.com>
Reviewed-by: NKever Yang <Kever.yang@rock-chips.com>

arch/arm/include/asm/arch-rockchip/sdram_rk3399.h

@@ -18,6 +18,16 @@ struct rk3399_ddr_pi_regs {
 	u32 denali_pi[200];
 };
 
+union noc_ddrtimingc0 {
+	u32 d32;
+	struct {
+		unsigned burstpenalty : 4;
+		unsigned reserved0 : 4;
+		unsigned wrtomwr : 6;
+		unsigned reserved1 : 18;
+	} b;
+};
+
 struct rk3399_msch_regs {
 	u32 coreid;
 	u32 revisionid;
@@ -36,7 +46,7 @@ struct rk3399_msch_regs {
 struct rk3399_msch_timings {
 	u32 ddrtiminga0;
 	u32 ddrtimingb0;
-	u32 ddrtimingc0;
+	union noc_ddrtimingc0 ddrtimingc0;
 	u32 devtodev0;
 	u32 ddrmode;
 	u32 agingx0;

drivers/ram/rockchip/sdram_rk3399.c

@@ -1110,7 +1110,7 @@ static void dram_all_config(struct dram_info *dram,
 		       &ddr_msch_regs->ddrtiminga0);
 		writel(noc_timing->ddrtimingb0,
 		       &ddr_msch_regs->ddrtimingb0);
-		writel(noc_timing->ddrtimingc0,
+		writel(noc_timing->ddrtimingc0.d32,
 		       &ddr_msch_regs->ddrtimingc0);
 		writel(noc_timing->devtodev0,
 		       &ddr_msch_regs->devtodev0);