Re: [PATCH] sunxi: support asymmetric dual rank DRAM on A64/R40

2021-02-25 Thread André Przywara
On 20/02/2021 12:14, Nicolas Boulenguez wrote: Hi, > From: Icenowy Zheng > > Previously we have known that R40 has a configuration register for its > rank 1, which allows different configuration than rank 0. Reverse > engineering of newest libdram of A64 from Allwinner shows that A64 has >

[PATCH] sunxi: support asymmetric dual rank DRAM on A64/R40

2021-02-20 Thread Nicolas Boulenguez
From: Icenowy Zheng Previously we have known that R40 has a configuration register for its rank 1, which allows different configuration than rank 0. Reverse engineering of newest libdram of A64 from Allwinner shows that A64 has this register too. It's bit 0 (which enables dual rank in rank 0

Re: [linux-sunxi] Re: [RFC PATCH] sunxi: support asymmetric dual rank DRAM on A64/R40

2020-06-23 Thread André Przywara
On 24/06/2020 01:34, Icenowy Zheng wrote: Hi, > 于 2020年6月24日 GMT+08:00 上午8:28:39, "André Przywara" > 写到: >> On 19/06/2020 13:16, Icenowy Zheng wrote: >> >> Hi Icenowy, >> >>> Previously we have known that R40 has a configuration register for >> its >>> rank 1, which allows different

Re: [linux-sunxi] Re: [RFC PATCH] sunxi: support asymmetric dual rank DRAM on A64/R40

2020-06-23 Thread Icenowy Zheng
于 2020年6月24日 GMT+08:00 上午8:28:39, "André Przywara" 写到: >On 19/06/2020 13:16, Icenowy Zheng wrote: > >Hi Icenowy, > >> Previously we have known that R40 has a configuration register for >its >> rank 1, which allows different configuration than rank 0. Reverse >> engineering of newest libdram of

Re: [RFC PATCH] sunxi: support asymmetric dual rank DRAM on A64/R40

2020-06-23 Thread André Przywara
On 19/06/2020 13:16, Icenowy Zheng wrote: Hi Icenowy, > Previously we have known that R40 has a configuration register for its > rank 1, which allows different configuration than rank 0. Reverse > engineering of newest libdram of A64 from Allwinner shows that A64 has > this register too. It's

[RFC PATCH] sunxi: support asymmetric dual rank DRAM on A64/R40

2020-06-19 Thread Icenowy Zheng
Previously we have known that R40 has a configuration register for its rank 1, which allows different configuration than rank 0. Reverse engineering of newest libdram of A64 from Allwinner shows that A64 has this register too. It's bit 0 (which enables dual rank in rank 0 configuration register)