On Sun, 11 Dec 2022 17:32:05 +0100 Jernej Skrabec <[email protected]> wrote:
Hi Jernej, many thanks for putting this together! I will have a more elaborate look at each patch later. > Current H616 DRAM driver is completely customized to Orange Pi Zero2 > board, which is currently the only H616 board supported by U-Boot. Not anymore, I merged the X96 Mate support lately, after the DT got merged into the Linux tree. Those are the values for the box I came up with: CONFIG_DRAM_SUN50I_H616_DX_ODT=0x03030303 CONFIG_DRAM_SUN50I_H616_DX_DRI=0x0e0e0e0e CONFIG_DRAM_SUN50I_H616_CA_DRI=0x1c12 CONFIG_DRAM_SUN50I_H616_TPR0=0xc0000c05 CONFIG_DRAM_SUN50I_H616_TPR10=0x2f0007 CONFIG_DRAM_SUN50I_H616_TPR11=0xffffdddd CONFIG_DRAM_SUN50I_H616_TPR12=0xfedf7557 based on this boot0 found in some firmware update image: 00045400 be 02 00 ea 65 47 4f 4e 2e 42 54 30 cc ba f3 80 |....eGON.BT0....| 00045410 00 c0 00 00 30 00 00 00 00 00 00 00 00 00 02 00 |....0...........| 00045420 00 00 02 00 00 00 00 00 00 00 00 00 34 2e 30 00 |............4.0.| 00045430 00 00 00 00 03 00 00 00 88 02 00 00 03 00 00 00 |................| 00045440 03 03 03 03 0e 0e 0e 0e 12 1c 00 00 01 00 00 00 |................| 00045450 fb 30 00 00 00 00 00 00 40 08 00 00 04 00 00 00 |.0......@.......| 00045460 08 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 00045470 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 00045480 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 00045490 05 0c 00 c0 00 00 00 00 00 00 00 00 00 00 00 00 |................| 000454a0 80 80 80 33 07 00 2f 00 dd dd ff ff 57 75 df fe |...3../.....Wu..| 000454b0 40 00 00 00 00 00 00 00 00 00 00 00 08 00 02 01 |@...............| I would be grateful if you could verify this. I built it, and it reported the 4GB correctly, also managed to boot into Linux just fine. No extensive testing, nor didn't I compare register dumps or disassembly (yet). Cheers, Andre P.S. Any plans on upstreaming support for your T95 <whatever> H616 TV box? That would probably help the case here. > Needless to say, this is not ideal for adding new boards. With changes > in this series, all DDR3 boards are supported and all that is needed is > just vendor DRAM values extracted from Android image. New DRAM types > should also be easier to support, since a lot of constants used before > are not really DRAM type dependent. > > Changes were verified by decompiling driver and generated values were > compared to previous, hard coded ones. This was done without dram_para > structures, so compiler was able to heavily optimize code and produce > constants. > > Please take a look. > > Best regards, > Jernej > > Jernej Skrabec (8): > sunxi: Fix write to H616 DRAM CR register > sunxi: cosmetic: Fix H616 DRAM driver code style > sunxi: parameterize H616 DRAM ODT values > sunxi: Convert H616 DRAM options to single setting > sunxi: Always configure ODT on H616 DRAM > sunxi: Make bit delay function in H616 DRAM code void > sunxi: Parameterize bit delay code in H616 DRAM driver > sunxi: Parameterize H616 DRAM code some more > > .../include/asm/arch-sunxi/dram_sun50i_h616.h | 18 + > arch/arm/mach-sunxi/Kconfig | 67 +-- > arch/arm/mach-sunxi/dram_sun50i_h616.c | 445 +++++++++++------- > configs/orangepi_zero2_defconfig | 8 +- > 4 files changed, 348 insertions(+), 190 deletions(-) >
