Re: [PATCH v5 0/3] arm64: dts: qcom: add dts for sa8540p-ride board

From: Eric Chanudet
Date: Tue Oct 04 2022 - 09:28:36 EST

On Mon, Oct 03, 2022 at 01:31:52PM -0400, Brian Masney wrote:
> Just for documentation purposes, to get linux-next-20220930 booting on
> the QDrive3 with the upstream arm64 defconfig I had to apply the
> following patches:
> - arm64: dts: qcom: sc8280xp: fix UFS PHY serdes size
> Without this, the phy fails to probe due to the following error:
> qcom-qmp-ufs-phy 1d87000.phy: can't request region for resource [mem 0x01d87400-0x01d87507]
> qcom-qmp-ufs-phy 1d87000.phy: failed to create lane0 phy, -16
> qcom-qmp-ufs-phy: probe of 1d87000.phy failed with error -16
> - This hack patch is still needed:
> disable has_address_auth_metacap and has_generic_auth
> Without this, the boot hangs at:
> rcu: srcu_init: Setting srcu_struct sizes based on contention.
> arch_timer: cp15 and mmio timer(s) running at 19.20MHz (virt/virt).
> clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x46d987e47, max_idle_ns: 440795202767 ns
> sched_clock: 56 bits at 19MHz, resolution 52ns, wraps every 4398046511078ns
> - My UFS clock patch is still needed:
> arm64: dts: qcom: sc8280xp: correct ref_aux clock for ufs_mem_phy
> - I didn't use an initrd for testing so I had to change the options

I followed the instructions above and linux-next-20220930 booted on the
QDrive3 to a prompt. It then hanged after a couple minutes and rebooted
in Sahara mode:
B - 1662280 - Sahara Init
B - 1665422 - Sahara Open

There seems to be no trace from the kernel, this happened consistently
over 3 boots.

I asked Brian, he mentioned he only booted to prompt so that may have
happened unbeknownst to him as well.

Eric Chanudet