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Add sdram capacity auto detect for rk3288

Vagrant Cascadian u-boot 1 version New

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  1. v1 Latest0 of 2 patches 0 repliesNew

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None of the 2 patches the cover letter announces are in this archive.

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Cover letter [U-Boot] [PATCH 0/2] Add sdram capacity auto detect for rk3288
Quoted 6 lines · Ziyuan Xu
Quoted 5 lines · Vagrant Cascadian
Quoted 4 lines · Kever Yang

The rk3288 spl size is very close to 32KB while the rk3288 bootrom has the limitation of maximum size of SPL is 32KB. After apply this patch, the SPL size will exceed 32KB if we do not enable macro CONFIG_ROCKCHIP_SPL_BACK_TO_BROM.

With CONFIG_ROCKCHIP_SPL_BACK_TO_BROM=y, it fails to boot with no output on the console.

Quoted 18 lines
Quoted 14 lines
Quoted 1 line

This patch has test with 2GB DDR3 and 2GB/4GB LPDDR3.

Thanks for the patch!

Unfortunately, fails to build the firefly-rk3288 target, using arm-linux-gnueabihf-gcc (Debian 6.1.1-9) 6.1.1 20160705, applied to u-boot master 01c5075506afcb7a74e0db8600af8979f45881b5:

   CC      spl/arch/arm/mach-rockchip/rk3288/sdram_rk3288.o

arch/arm/mach-rockchip/rk3288/sdram_rk3288.c: In function
'conv_of_platdata':
arch/arm/mach-rockchip/rk3288/sdram_rk3288.c:1042:30: error: 'struct
dtd_rockchip_rk3288_dmc' has no member named 'rockchip_num_channels'; did you mean 'rockchip_noc'?
plat->num_channels = of_plat->rockchip_num_channels;

(quoted diff) +1 -1
-       plat->num_channels = of_plat->rockchip_num_channels;
+       plat->num_channels = 2;
Quoted 4 lines

firefly-rk3288 deploy CONFIG_OF_PLATDATA, driver read platform data from include/generated/dt-structs.h which is generated according to dts file.
Please try above change.

With this change, it builds, but it hangs at boot:

U-Boot SPL 2016.09-rc2+dfsg1-2~20160910~6 (Sep 10 2016 - 18:51:28) Trying to boot from MMC1

U-Boot 2016.09-rc2+dfsg1-2~20160910~6 (Sep 10 2016 - 18:51:28 +0000)

Model: Firefly-RK3288
DRAM:

This is on a firefly with 2GB of ram. I also have one with 4GB of ram, hence my interest in this patch series!

live well,
vagrant
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Read the cover letter in its thread