ddr: marvell: a38x: add ddr32 support

commit 32800667b375ebd1f82120da0f3479b1cf52d96d upstream.

Required changes made for 32bit ddr support.
An update is made to the topology map, according to
bus_act_mask, set in the dram_port.c

Signed-off-by: Alex Leibovich <alexl@marvell.com>
Reviewed-by: Nadav Haklai <Nadav.Haklai@cavium.com>
Reviewed-by: Kostya Porotchkin <Kostya.Porotchkin@cavium.com>
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Tested-by: Chris Packham <chris.packham@alliedtelesis.co.nz>

diff --git a/drivers/ddr/marvell/a38x/mv_ddr_topology.c b/drivers/ddr/marvell/a38x/mv_ddr_topology.c
index 09840b1..f2cd7c0 100644 (file)
--- a/drivers/ddr/marvell/a38x/mv_ddr_topology.c
+++ b/drivers/ddr/marvell/a38x/mv_ddr_topology.c
@@ -144,6 +144,9 @@ unsigned short mv_ddr_bus_bit_mask_get(void)
        unsigned int octets_per_if_num = ddr3_tip_dev_attr_get(0, MV_ATTR_OCTET_PER_INTERFACE);
 
        if (tm->cfg_src == MV_DDR_CFG_SPD) {
+               if (tm->bus_act_mask == BUS_MASK_32BIT)
+                       tm->spd_data.byte_fields.byte_13.all_bits = MV_DDR_PRI_BUS_WIDTH_32;
+
                enum mv_ddr_pri_bus_width pri_bus_width = mv_ddr_spd_pri_bus_width_get(&tm->spd_data);
                enum mv_ddr_bus_width_ext bus_width_ext = mv_ddr_spd_bus_width_ext_get(&tm->spd_data);
 
@@ -151,7 +154,7 @@ unsigned short mv_ddr_bus_bit_mask_get(void)
                case MV_DDR_PRI_BUS_WIDTH_16:
                        pri_and_ext_bus_width = BUS_MASK_16BIT;
                        break;
-               case MV_DDR_PRI_BUS_WIDTH_32:
+               case MV_DDR_PRI_BUS_WIDTH_32: /*each bit represents byte, so 0xf-is means 4 bytes-32 bit*/
                        pri_and_ext_bus_width = BUS_MASK_32BIT;
                        break;
                case MV_DDR_PRI_BUS_WIDTH_64: