[PATCH v2 2/3] sunxi: a133: dram: Fix PHY dx delays offsets and add dmb

[Jernej Škrabec]

Dne četrtek, 29. januar 2026 ob 00:57:16 Srednjeevropski standardni čas je Paul Kocialkowski napisal(a):
> From: Paul Kocialkowski <paulk at sys-base.io>
> 
> Some of the offsets for the DRAM PHY dx delays are wrong (as compared
> to the H616 code and the reference binary) since the
> mctl_phy_dx_delay0_inner function does not perform the correct
> calculation for some of them.
> 
> Introduce a mctl_phy_dx_delay0_inner0 to fix the incorrect offsets and
> rename the existing function to mctl_phy_dx_delay0_inner1 for the
> offsets it correctly handles.
> 
> Also add memory barriers that are also present in the H616 code while
> at it.
> 
> This fixes detection of 4 GiB DRAM on some boards using LPDDR4.
> 
> Signed-off-by: Paul Kocialkowski <paulk at sys-base.io>
> Sponsored-by: MEC Electronics GmbH <https://www.mec.at/>

Acked-by: Jernej Skrabec <jernej.skrabec at gmail.com>

Best regards,
Jernej