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ram: rk3399: Map chipselect for lpddr4

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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>
This commit is contained in:
Jagan Teki 2019-07-16 17:27:18 +05:30 • committed by Kever Yang
parent d3d0099ca6
commit 4e9de9eba8
1 changed files with 10 additions and 0 deletions
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10
drivers/ram/rockchip/sdram_rk3399.c
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@ -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)