[U-Boot] [PATCH v3 30/57] ram: rk3399: Map chipselect for lpddr4

Kever Yang
2019-07-16T13:13:59Z

On 2019/7/16 下午7:57, Jagan Teki wrote:
> Assign desired cs_map values for lpddr4 during set memory map.
>
> Initial cs_map values is based on the sdram parameters, so
> the same will adjusted based dramtype as LPDDR4.
>
> 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 | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c
> index 2ab10da53f..7689711a99 100644
> --- a/drivers/ram/rockchip/sdram_rk3399.c
> +++ b/drivers/ram/rockchip/sdram_rk3399.c
> @@ -188,6 +188,16 @@ static void set_memory_map(const struct chan_info *chan, u32 channel,
> clrsetbits_le32(&denali_pi[155], (0x3 << 16) | (0x7 << 24),
> ((3 - sdram_ch->cap_info.bk) << 16) |
> ((16 - row) << 24));
> +
> + if (IS_ENABLED(CONFIG_RAM_RK3399_LPDDR4)) {
> + if (cs_map == 1)
> + cs_map = 0x5;
> + else if (cs_map == 2)
> + cs_map = 0xa;
> + else
> + cs_map = 0xF;
> + }
> +
> /* PI_41 PI_CS_MAP:RW:24:4 */
> clrsetbits_le32(&denali_pi[41], 0xf << 24, cs_map << 24);
> if (sdram_ch->cap_info.rank == 1 && params->base.dramtype == DDR3)