[v3,33/57] ram: rk3399: Add IO settings
diff mbox series

Message ID 20190716115745.12585-34-jagan@amarulasolutions.com
State New
Headers show
Series
  • ram: rk3399: Add LPDDR4 support
Related show

Commit Message

Jagan Teki July 16, 2019, 11:57 a.m. UTC
Add IO settings for dram ctl and phy.

IO settings are useful for configuring ctl, phy odt, vref,
mr5, mode select and other needed input output operations
for lpddr4 or any other dramtype sdram.

Right now, this patch added IO setting for all supported
sdram frequencies.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: YouMin Chen <cym@rock-chips.com>
---
 drivers/ram/rockchip/sdram_rk3399.c | 104 ++++++++++++++++++++++++++++
 1 file changed, 104 insertions(+)

Comments

Kever Yang July 16, 2019, 1:14 p.m. UTC | #1
On 2019/7/16 下午7:57, Jagan Teki wrote:
> Add IO settings for dram ctl and phy.
>
> IO settings are useful for configuring ctl, phy odt, vref,
> mr5, mode select and other needed input output operations
> for lpddr4 or any other dramtype sdram.
>
> Right now, this patch added IO setting for all supported
> sdram frequencies.
>
> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
> Signed-off-by: YouMin Chen <cym@rock-chips.com>

Reviewed-by: Kever Yang <Kever.yang@rock-chips.com>

Thanks,
  - Kever
> ---
>   drivers/ram/rockchip/sdram_rk3399.c | 104 ++++++++++++++++++++++++++++
>   1 file changed, 104 insertions(+)
>
> diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c
> index 359ab0b826..95d9f3a88b 100644
> --- a/drivers/ram/rockchip/sdram_rk3399.c
> +++ b/drivers/ram/rockchip/sdram_rk3399.c
> @@ -80,6 +80,110 @@ struct rockchip_dmc_plat {
>   	struct regmap *map;
>   };
>   
> +struct io_setting {
> +	u32 mhz;
> +	u32 mr5;
> +	/* dram side */
> +	u32 dq_odt;
> +	u32 ca_odt;
> +	u32 pdds;
> +	u32 dq_vref;
> +	u32 ca_vref;
> +	/* phy side */
> +	u32 rd_odt;
> +	u32 wr_dq_drv;
> +	u32 wr_ca_drv;
> +	u32 wr_ckcs_drv;
> +	u32 rd_odt_en;
> +	u32 rd_vref;
> +} lpddr4_io_setting[] = {
> +	{
> +		50 * MHz,
> +		0,
> +		/* dram side */
> +		0,	/* dq_odt; */
> +		0,	/* ca_odt; */
> +		6,	/* pdds; */
> +		0x72,	/* dq_vref; */
> +		0x72,	/* ca_vref; */
> +		/* phy side */
> +		PHY_DRV_ODT_HI_Z,	/* rd_odt; */
> +		PHY_DRV_ODT_40,	/* wr_dq_drv; */
> +		PHY_DRV_ODT_40,	/* wr_ca_drv; */
> +		PHY_DRV_ODT_40,	/* wr_ckcs_drv; */
> +		0,	/* rd_odt_en;*/
> +		41,	/* rd_vref; (unit %, range 3.3% - 48.7%) */
> +	},
> +	{
> +		600 * MHz,
> +		0,
> +		/* dram side */
> +		1,	/* dq_odt; */
> +		0,	/* ca_odt; */
> +		6,	/* pdds; */
> +		0x72,	/* dq_vref; */
> +		0x72,	/* ca_vref; */
> +		/* phy side */
> +		PHY_DRV_ODT_HI_Z,	/* rd_odt; */
> +		PHY_DRV_ODT_48,	/* wr_dq_drv; */
> +		PHY_DRV_ODT_40,	/* wr_ca_drv; */
> +		PHY_DRV_ODT_40,	/* wr_ckcs_drv; */
> +		0,	/* rd_odt_en; */
> +		32,	/* rd_vref; (unit %, range 3.3% - 48.7%) */
> +	},
> +	{
> +		800 * MHz,
> +		0,
> +		/* dram side */
> +		1,	/* dq_odt; */
> +		0,	/* ca_odt; */
> +		1,	/* pdds; */
> +		0x72,	/* dq_vref; */
> +		0x72,	/* ca_vref; */
> +		/* phy side */
> +		PHY_DRV_ODT_40,	/* rd_odt; */
> +		PHY_DRV_ODT_48,	/* wr_dq_drv; */
> +		PHY_DRV_ODT_40,	/* wr_ca_drv; */
> +		PHY_DRV_ODT_40,	/* wr_ckcs_drv; */
> +		1,	/* rd_odt_en; */
> +		17,	/* rd_vref; (unit %, range 3.3% - 48.7%) */
> +	},
> +	{
> +		933 * MHz,
> +		0,
> +		/* dram side */
> +		3,	/* dq_odt; */
> +		0,	/* ca_odt; */
> +		6,	/* pdds; */
> +		0x59,	/* dq_vref; 32% */
> +		0x72,	/* ca_vref; */
> +		/* phy side */
> +		PHY_DRV_ODT_HI_Z,	/* rd_odt; */
> +		PHY_DRV_ODT_48,	/* wr_dq_drv; */
> +		PHY_DRV_ODT_40,	/* wr_ca_drv; */
> +		PHY_DRV_ODT_40,	/* wr_ckcs_drv; */
> +		0,	/* rd_odt_en; */
> +		32,	/* rd_vref; (unit %, range 3.3% - 48.7%) */
> +	},
> +	{
> +		1066 * MHz,
> +		0,
> +		/* dram side */
> +		6,	/* dq_odt; */
> +		0,	/* ca_odt; */
> +		1,	/* pdds; */
> +		0x10,	/* dq_vref; */
> +		0x72,	/* ca_vref; */
> +		/* phy side */
> +		PHY_DRV_ODT_40,	/* rd_odt; */
> +		PHY_DRV_ODT_60,	/* wr_dq_drv; */
> +		PHY_DRV_ODT_40,	/* wr_ca_drv; */
> +		PHY_DRV_ODT_40,	/* wr_ckcs_drv; */
> +		1,	/* rd_odt_en; */
> +		17,	/* rd_vref; (unit %, range 3.3% - 48.7%) */
> +	},
> +};
> +
>   static void *get_ddrc0_con(struct dram_info *dram, u8 channel)
>   {
>   	return (channel == 0) ? &dram->grf->ddrc0_con0 : &dram->grf->ddrc0_con1;

Patch
diff mbox series

diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c
index 359ab0b826..95d9f3a88b 100644
--- a/drivers/ram/rockchip/sdram_rk3399.c
+++ b/drivers/ram/rockchip/sdram_rk3399.c
@@ -80,6 +80,110 @@  struct rockchip_dmc_plat {
 	struct regmap *map;
 };
 
+struct io_setting {
+	u32 mhz;
+	u32 mr5;
+	/* dram side */
+	u32 dq_odt;
+	u32 ca_odt;
+	u32 pdds;
+	u32 dq_vref;
+	u32 ca_vref;
+	/* phy side */
+	u32 rd_odt;
+	u32 wr_dq_drv;
+	u32 wr_ca_drv;
+	u32 wr_ckcs_drv;
+	u32 rd_odt_en;
+	u32 rd_vref;
+} lpddr4_io_setting[] = {
+	{
+		50 * MHz,
+		0,
+		/* dram side */
+		0,	/* dq_odt; */
+		0,	/* ca_odt; */
+		6,	/* pdds; */
+		0x72,	/* dq_vref; */
+		0x72,	/* ca_vref; */
+		/* phy side */
+		PHY_DRV_ODT_HI_Z,	/* rd_odt; */
+		PHY_DRV_ODT_40,	/* wr_dq_drv; */
+		PHY_DRV_ODT_40,	/* wr_ca_drv; */
+		PHY_DRV_ODT_40,	/* wr_ckcs_drv; */
+		0,	/* rd_odt_en;*/
+		41,	/* rd_vref; (unit %, range 3.3% - 48.7%) */
+	},
+	{
+		600 * MHz,
+		0,
+		/* dram side */
+		1,	/* dq_odt; */
+		0,	/* ca_odt; */
+		6,	/* pdds; */
+		0x72,	/* dq_vref; */
+		0x72,	/* ca_vref; */
+		/* phy side */
+		PHY_DRV_ODT_HI_Z,	/* rd_odt; */
+		PHY_DRV_ODT_48,	/* wr_dq_drv; */
+		PHY_DRV_ODT_40,	/* wr_ca_drv; */
+		PHY_DRV_ODT_40,	/* wr_ckcs_drv; */
+		0,	/* rd_odt_en; */
+		32,	/* rd_vref; (unit %, range 3.3% - 48.7%) */
+	},
+	{
+		800 * MHz,
+		0,
+		/* dram side */
+		1,	/* dq_odt; */
+		0,	/* ca_odt; */
+		1,	/* pdds; */
+		0x72,	/* dq_vref; */
+		0x72,	/* ca_vref; */
+		/* phy side */
+		PHY_DRV_ODT_40,	/* rd_odt; */
+		PHY_DRV_ODT_48,	/* wr_dq_drv; */
+		PHY_DRV_ODT_40,	/* wr_ca_drv; */
+		PHY_DRV_ODT_40,	/* wr_ckcs_drv; */
+		1,	/* rd_odt_en; */
+		17,	/* rd_vref; (unit %, range 3.3% - 48.7%) */
+	},
+	{
+		933 * MHz,
+		0,
+		/* dram side */
+		3,	/* dq_odt; */
+		0,	/* ca_odt; */
+		6,	/* pdds; */
+		0x59,	/* dq_vref; 32% */
+		0x72,	/* ca_vref; */
+		/* phy side */
+		PHY_DRV_ODT_HI_Z,	/* rd_odt; */
+		PHY_DRV_ODT_48,	/* wr_dq_drv; */
+		PHY_DRV_ODT_40,	/* wr_ca_drv; */
+		PHY_DRV_ODT_40,	/* wr_ckcs_drv; */
+		0,	/* rd_odt_en; */
+		32,	/* rd_vref; (unit %, range 3.3% - 48.7%) */
+	},
+	{
+		1066 * MHz,
+		0,
+		/* dram side */
+		6,	/* dq_odt; */
+		0,	/* ca_odt; */
+		1,	/* pdds; */
+		0x10,	/* dq_vref; */
+		0x72,	/* ca_vref; */
+		/* phy side */
+		PHY_DRV_ODT_40,	/* rd_odt; */
+		PHY_DRV_ODT_60,	/* wr_dq_drv; */
+		PHY_DRV_ODT_40,	/* wr_ca_drv; */
+		PHY_DRV_ODT_40,	/* wr_ckcs_drv; */
+		1,	/* rd_odt_en; */
+		17,	/* rd_vref; (unit %, range 3.3% - 48.7%) */
+	},
+};
+
 static void *get_ddrc0_con(struct dram_info *dram, u8 channel)
 {
 	return (channel == 0) ? &dram->grf->ddrc0_con0 : &dram->grf->ddrc0_con1;