From 1ff5283d92b25e449358bd88bc0b18db4be61d4f Mon Sep 17 00:00:00 2001 From: Jagan Teki Date: Mon, 15 Jul 2019 23:58:53 +0530 Subject: [PATCH] ram: rk3399: Compute stride for 1 channel a Add stride computation for the sdram which support single channel a This configuration available in NanoPi NEO4 and the same can work with existing rk3399-sdram-ddr3-1866.dtsi Signed-off-by: Jagan Teki Signed-off-by: YouMin Chen Reviewed-by: Kever Yang --- drivers/ram/rockchip/sdram_rk3399.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c index c626ef602c..8bbacb5275 100644 --- a/drivers/ram/rockchip/sdram_rk3399.c +++ b/drivers/ram/rockchip/sdram_rk3399.c @@ -1211,6 +1211,10 @@ static unsigned char calculate_stride(struct rk3399_sdram_params *params) chinfo |= 1 << channel; } + /* stride calculation for 1 channel */ + if (params->base.num_channels == 1 && chinfo & 1) + return 0x17; /* channel a */ + /* stride calculation for 2 channels, default gstride type is 256B */ if (ch_cap[0] == ch_cap[1]) { cap = ch_cap[0] + ch_cap[1]; -- 2.39.5