On Wed, 2019-03-20 at 23:46 +0200, Ville Syrjala wrote:
> +static void cnl_get_dram_timings(struct drm_i915_private *dev_priv,
> + const struct dram_info *dram,
> + struct intel_dram_timings *t)
> +{
> + u32 val;
> +
> + if (dram->channels & BIT(0)) {
> + val = I915_READ(MCHBAR_CH0_CR_TC_PRE_0_0_0_MCHBAR);
> + cnl_get_dram_ch_timings(t, 0, dram->type, val);
> + } else if (dram->channels & BIT(1)) {
> + val = I915_READ(MCHBAR_CH1_CR_TC_PRE_0_0_0_MCHBAR);
> + cnl_get_dram_ch_timings(t, 1, dram->type, val);
> + }
> +}
So if have now dram->channels as a bit mask, can't it be so
that we have both enabled and what will happen then?
This code will always use channel 0 timings in that case as I
understand, is it expected to work this way?
Also, if it is always either one or another, then we probably don't
need "else if" here.
Best Regards,
Lisovskiy Stanislav
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