[27/92] ram: rk3399: Add DdrMode
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Message ID 20190611145135.21399-28-jagan@amarulasolutions.com
State New
Headers show
Series
  • ram: rk3399: Add LPDDR4 support
Related show

Commit Message

Jagan Teki June 11, 2019, 2:50 p.m. UTC 
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>
---
 .../include/asm/arch-rockchip/sdram_rk3399.h    | 17 ++++++++++++++++-
 drivers/ram/rockchip/sdram_rk3399.c             |  2 +-
 2 files changed, 17 insertions(+), 2 deletions(-)

Patch
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diff --git a/arch/arm/include/asm/arch-rockchip/sdram_rk3399.h b/arch/arm/include/asm/arch-rockchip/sdram_rk3399.h
index 924eeb3bac..a191d242f8 100644
--- a/arch/arm/include/asm/arch-rockchip/sdram_rk3399.h
+++ b/arch/arm/include/asm/arch-rockchip/sdram_rk3399.h
@@ -36,6 +36,21 @@  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;
@@ -56,7 +71,7 @@  struct rk3399_msch_timings {
 	u32 ddrtimingb0;
 	union noc_ddrtimingc0 ddrtimingc0;
 	u32 devtodev0;
-	u32 ddrmode;
+	union noc_ddrmode ddrmode;
 	u32 agingx0;
 };
 
diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c
index f9fec14758..6bf8dce6e0 100644
--- a/drivers/ram/rockchip/sdram_rk3399.c
+++ b/drivers/ram/rockchip/sdram_rk3399.c
@@ -1047,7 +1047,7 @@  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) */