Hi Marek,
On 19/08/2020 11:57, Marek Behún wrote:
This commit fixes initialization of COMPHY on EspressoBin.
Commit 22f418935be4 ("phy: marvell: a3700: Use comphy_mux on Armada 37xx.") introduced usage of comphy_mux on Armada 37xx comphy driver. The lanes are defined in comphy_a3700.c as described in functional specification, that is: lane 0 is SGMII1 or USB3 lane 1 is PCIe or SGMII0 lane 2 is SATA or USB3
But the DTS for EspressoBin configures PCIe on lane 0 and USB3 on lane 1, which is wrong in the sense of the specification and doesn't work with the comphy_mux code, which is 2 years now (the aardvark driver causes synchronous abort in U-Boot).
It worked till the above mentioned commit, because the code for powering up PCIe PHY doesn't work with lane number at all, and the code for powering up USB3 PHY works differently only if USB3 is on lane 2, ie. the check goes like: if (lane == 2) something else something else so it does not differentiate between lanes 0 and 1.
In the future I shall post patches that remove the comphy_a3700 driver and add comphy driver which uses calls to ATF, like Linux' driver does. This will have the advantage of same DTS bindings as Linux', but till this is done, we need this patch.
Signed-off-by: Marek Behún marek.behun@nic.cz Tested-by: Pali Rohár pali@kernel.org Cc: Stefan Roese sr@denx.de
now that I have a working mainline firmware, I think I have a related problem: my sata ssd doesn't get detected, I just get this:
TIM-1.0 WTMI-devel-18.12.1- WTMI: system early-init CPU VDD voltage default value: 1.108V NOTICE: Booting Trusted Firmware NOTICE: BL1: v2.3(): (Marvell-devel-18.12.0) NOTICE: BL1: Built : 06:12:46, Aug 26 2020 NOTICE: BL1: Booting BL2 NOTICE: BL2: v2.3(): (Marvell-devel-18.12.0) NOTICE: BL2: Built : 06:12:46, Aug 26 2020 NOTICE: BL1: Booting BL31 NOTICE: BL31: v2.3(): (Marvell-devel-18.12.0) NOTICE: BL31: Built : 06:12:46
U-Boot 2020.07 (Aug 26 2020 - 06:12:46 +0000)
DRAM: 1 GiB Comphy-0: USB3_HOST0 5 Gbps Comphy-1: PEX0 2.5 Gbps Comphy-2: SATA0 5 Gbps SATA link 0 timeout.
Any idea what's missing here? Do you think this may also be comphy related?
Please cc: me on your comphy/atf patches, I'd be willing to test those!
Thanks, Andre