From d67b98ed4790a30da9bdd337cfb76b03aac993e3 Mon Sep 17 00:00:00 2001 From: Baruch Siach Date: Mon, 20 Jan 2020 14:20:06 +0200 Subject: [PATCH] ddr: marvell: a38x: allow board specific clock out setup DDR clock out might be unrelated to the number of active chip-select. For example, the board might have two DDR components, but only one chip-select. The clk_enable mask allows the board to enable DDR clocks regardless of active chip-selects. Reviewed-by: Stefan Roese Signed-off-by: Baruch Siach --- drivers/ddr/marvell/a38x/ddr3_training.c | 10 ++++++++-- drivers/ddr/marvell/a38x/ddr_topology_def.h | 3 +++ 2 files changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/ddr/marvell/a38x/ddr3_training.c b/drivers/ddr/marvell/a38x/ddr3_training.c index c7be700d64..9718f18c30 100644 --- a/drivers/ddr/marvell/a38x/ddr3_training.c +++ b/drivers/ddr/marvell/a38x/ddr3_training.c @@ -280,8 +280,14 @@ int ddr3_tip_configure_cs(u32 dev_num, u32 if_id, u32 cs_num, u32 enable) { u32 data, addr_hi, data_high; u32 mem_index; + u32 clk_enable; struct mv_ddr_topology_map *tm = mv_ddr_topology_map_get(); + if (tm->clk_enable & (1 << cs_num)) + clk_enable = 1; + else + clk_enable = enable; + if (enable == 1) { data = (tm->interface_params[if_id].bus_width == MV_DDR_DEV_WIDTH_8BIT) ? 0 : 1; @@ -316,13 +322,13 @@ int ddr3_tip_configure_cs(u32 dev_num, u32 if_id, u32 cs_num, u32 enable) case 2: CHECK_STATUS(ddr3_tip_if_write (dev_num, ACCESS_TYPE_UNICAST, if_id, - DUNIT_CTRL_LOW_REG, (enable << (cs_num + 11)), + DUNIT_CTRL_LOW_REG, (clk_enable << (cs_num + 11)), 1 << (cs_num + 11))); break; case 3: CHECK_STATUS(ddr3_tip_if_write (dev_num, ACCESS_TYPE_UNICAST, if_id, - DUNIT_CTRL_LOW_REG, (enable << 15), 1 << 15)); + DUNIT_CTRL_LOW_REG, (clk_enable << 15), 1 << 15)); break; } diff --git a/drivers/ddr/marvell/a38x/ddr_topology_def.h b/drivers/ddr/marvell/a38x/ddr_topology_def.h index e6fe8a0428..950f296ff9 100644 --- a/drivers/ddr/marvell/a38x/ddr_topology_def.h +++ b/drivers/ddr/marvell/a38x/ddr_topology_def.h @@ -124,6 +124,9 @@ struct mv_ddr_topology_map { /* electrical parameters */ unsigned int electrical_data[MV_DDR_EDATA_LAST]; + + /* Clock enable mask */ + u32 clk_enable; }; enum mv_ddr_iface_mode { -- 2.25.1