| Message ID | 20190715182856.21688-16-jagan@amarulasolutions.com |
|---|---|
| State | New |
| Headers | show |
| Series |
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| Related | show |
On 2019/7/16 上午2:28, Jagan Teki wrote: > 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 <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 | 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];
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];