[PATCH u-boot-marvell 0/8] Turris Omnia: Add support for configuring mSATA and WWAN slots via env variables

[Pali Rohár]

On Wednesday 02 March 2022 12:47:50 Pali Rohár wrote:
> Some mPCIe cards are broken and their PIN 43 incorrectly that card is
> mSATA. U-Boot SPL on Turris Omnia is using PIN 43 for configuring PCIe
> vs SATA functionality on SerDes. Allow to configure functionality via
> additional env variable "omnia_msata_slot" which may override PIN 43.
> 
> To force PCIe mode for broken MiniPCIe cards, call U-Boot commands:
> 
>   => setenv omnia_msata_slot pcie
>   => saveenv
>   => reset
> 
> 
> PCI-SIG in PCIe Mini CEM 2.1 spec added support for USB3.0 mode to mPCIe
> cards. PCIe and USB3.0 functions share same pins (like SATA pins on mSATA
> with PCIe on mPCIe) and therefore only one function may be active at the
> same time. This mode was introduced by PCI-SIG specially for LTE/5G modems.
> 
> One mPCIe slot on Turris Omnia is connected to A385 CPU SerDes which
> can be configured for PCIe or USB3.0 function. It is the slot with SIM
> card suitable for cellular modems. As PCIe Mini CEM 2.1 spec say that
> detection of PCIe vs USB3.0 functionality is platform specific, add a
> new U-Boot variable "omnia_wwan_slot" for configuring functionality in
> this slot. By default PCIe is used like before.
> 
> To set this WWAN slot to USB3.0 mode, call U-Boot commands:
> 
>   => setenv omnia_wwan_slot usb3
>   => saveenv
>   => reset
> 

PING? Any more comments on this patch series? It is there for two months.

> Pali Rohár (8):
>   env: sf: Allow to use env_sf_init_addr() at any stage
>   arm: mvebu: turris_omnia: Provide env_sf_get_env_addr() function
>   arm: mvebu: turris_omnia: Enable ENV support in SPL
>   arm: mvebu: turris_omnia: Define only one serdes map variable
>   arm: mvebu: turris_omnia: Allow to configure mSATA slot via env
>     variable
>   arm: mvebu: turris_omnia: Extract code for disabling sata/pcie
>   arm: mvebu: turris_omnia: Signal error when sata/pcie DT mode
>   arm: mvebu: turris_omnia: Add support for USB3.0 mode in WWAN MiniPCIe
>     slot
> 
>  board/CZ.NIC/turris_omnia/turris_omnia.c | 207 +++++++++++++++++------
>  configs/turris_omnia_defconfig           |   1 +
>  env/sf.c                                 |  22 +--
>  3 files changed, 163 insertions(+), 67 deletions(-)
> 
> -- 
> 2.20.1
>