[U-Boot] [PATCH 19/23] ARM: tegra: Enable PCIe on Beaver

[Thierry Reding]

On Wed, Aug 20, 2014 at 10:56:58AM +0200, Marcel Ziswiler wrote:
> On Wed, 2014-08-20 at 08:38 +0200, Thierry Reding wrote:
> > Hehe... this should probably be i2c_write() instead. Perhaps this is on
> > by default on Beaver and Cardhu but not on the particular revision that
> > Apalis T30 uses?
> 
> Well, we anyway use a completely different rail configuration but me
> just copy-pasting your read and only changing register addresses resp.
> values happens to just not wana be working (;-p).
> 
> > Can you test whether things start working if you turn that into a write
> > instead?
> 
> Sure, already did and it works like a beauty! You're the man!

Pretty cool.

> U-Boot SPL 2014.10-rc1-00110-gff50ce9-dirty (Aug 20 2014 - 10:14:49)
> 
> 
> U-Boot 2014.10-rc1-00110-gff50ce9-dirty (Aug 20 2014 - 10:14:49)
> 
> TEGRA30
> Board: Toradex Apalis T30
> I2C:   ready 
> DRAM:  1 GiB 
> MMC:   Tegra SD/MMC: 0, Tegra SD/MMC: 1, Tegra SD/MMC: 2
> *** Warning - bad CRC, using default environment
> 
> tegra-pcie: PCI regions:
> tegra-pcie:   I/O: 0x2000000-0x2010000
> tegra-pcie:   non-prefetchable memory: 0x20000000-0x30000000
> tegra-pcie:   prefetchable memory: 0x30000000-0x40000000
> tegra-pcie: 4x1, 1x2 configuration
> tegra-pcie: probing port 0, using 4 lanes
> tegra-pcie: link 0 down, retrying
> tegra-pcie: link 0 down, retrying
> tegra-pcie: link 0 down, retrying
> tegra-pcie: link 0 down, ignoring
> tegra-pcie: probing port 1, using 1 lanes
> tegra-pcie: probing port 2, using 1 lanes
> In:    serial
> Out:   serial
> Err:   serial
> Net:   PCI device RTL8169#0: unknown chip version, assuming RTL-8169
> PCI device: TxConfig = 0x3F4000C0
> RTL8169#0
> Warning: RTL8169#0 using MAC address from net device
> 
> Hit any key to stop autoboot:  0
> Apalis T30 # dhcp
> BOOTP broadcast 1
> DHCP client bound to address 192.168.10.5
> Using RTL8169#0 device
> TFTP from server 192.168.10.1; our IP address is 192.168.10.5
> Filename 'uImage-apalis_t30'.
> Load address: 0x80408000
> Loading:
> #################################################################
> 
> #################################################################
> 
> #################################################################
> 
> #################################################################
>          ####################################################
>          3.9 MiB/s
> done
> Bytes transferred = 4569784 (45bab8 hex)
> Apalis T30 # 


Wow, 3.9 MiB/s on average. I only get around 2.0 MiB/s on all my
devices. TrimSlice is the exception with around 5.0 MiB/s. I wonder
where exactly that comes from. It's the oldest device so I'd expect
it to be the slowest too.

Thierry
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