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From: Tony Lindgren <tony@atomide.com>
To: Suman Anna <s-anna@ti.com>
Cc: linux-omap@vger.kernel.org, devicetree@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	Tero Kristo <t-kristo@ti.com>
Subject: Re: [PATCH 00/13] Add IPU & DSP remoteprocs on OMAP4 and OMAP5
Date: Fri, 10 Jul 2020 09:58:14 -0700
Message-ID: <20200710165814.GF5849@atomide.com> (raw)
In-Reply-To: <20200709231954.1973-1-s-anna@ti.com>

Hi,

* Suman Anna <s-anna@ti.com> [200709 16:20]:
> Hi Tony,
> 
> The following series contains all the necessary DT pieces to boot the
> IPU and DSP remote processors on OMAP4 and OMAP5 SoCs. They are
> enabled specifically on the TI OMAP4 PandaBoard and OMAP5 uEVM boards.
> This is the last DT piece that now completes the support for IPUs and
> DSPs on all OMAP4+ SoCs, similar patches were merged for 5.8 covering
> the DRA7xx/AM57xx SoCs. Appreciate it if you can pick up the series for
> 5.9 if it isn't too late.

Great and good to hear things are working with only dts changes now :)
Yes let's try to get these merged.

> There is one issue that I have run into while testing this series on
> the latest kernel. I am seeing a l3_noc error for OMAP4 DSP when it
> attempts to auto-suspend or stop after it is booted. The issue is a
> L4CFG read error that happens in the sysc_disable_module() function
> in ti-sysc code.
> 
> I do not have any issues on my downstream 5.4 based SDK kernel. I have
> root-caused this to the OMAP4 voltage controller patches you added for
> 5.5 kernel through your omap-for-v5.5/pm branch, specifically the
> commit 4873843718f9 ("ARM: OMAP2+: Initialize voltage controller for omap4").
> The VOLTCTRL register value is 0x300 before that patch, and modifying
> this register either through  omap4_vc_init_pmic_signaling() or
> omap4_vc_set_pmic_signaling() will trigger this. A debug print in
> sysc_disable_module() also seems to help.

Hmm interesting, not sure how the VOLTCTRL register affects this.

I wonder the following commit in v5.8-rc3 might help with this though:

5ce8aee81be6 ("bus: ti-sysc: Flush posted write on enable and disable")

I was seeing that occasionally with mcspi, but never had anything
reproducable.

Regards,

Tony

  parent reply index

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-09 23:19 Suman Anna
2020-07-09 23:19 ` [PATCH 01/13] ARM: dts: omap4: Add timer_sys_ck clocks for timers Suman Anna
2020-07-09 23:19 ` [PATCH 02/13] ARM: dts: omap5: " Suman Anna
2020-07-09 23:19 ` [PATCH 03/13] ARM: dts: omap4: Update the DSP node Suman Anna
2020-07-09 23:19 ` [PATCH 04/13] ARM: dts: omap4: Add IPU DT node Suman Anna
2020-07-09 23:19 ` [PATCH 05/13] ARM: dts: omap4: Add aliases for rproc nodes Suman Anna
2020-07-09 23:19 ` [PATCH 06/13] ARM: dts: omap4-panda-common: Add CMA pools and enable IPU & DSP Suman Anna
2020-08-12  5:31   ` Guillaume Tucker
2020-08-14 14:32     ` Guillaume Tucker
2020-08-14 15:26       ` Suman Anna
2020-08-14 16:33         ` Guillaume Tucker
2020-08-14 19:33           ` Suman Anna
2020-08-20  9:17             ` Guillaume Tucker
2020-07-09 23:19 ` [PATCH 07/13] ARM: dts: omap4-panda-common:: Add system timers to DSP and IPU Suman Anna
2020-07-09 23:19 ` [PATCH 08/13] ARM: dts: omap5: Add DSP and IPU nodes Suman Anna
2020-07-09 23:19 ` [PATCH 09/13] ARM: dts: omap5: Add aliases for rproc nodes Suman Anna
2020-07-09 23:19 ` [PATCH 10/13] ARM: dts: omap5-uevm: Add CMA pools and enable IPU & DSP Suman Anna
2020-07-09 23:19 ` [PATCH 11/13] ARM: dts: omap5-uevm: Add system timers to DSP and IPU Suman Anna
2020-07-09 23:19 ` [PATCH 12/13] ARM: dts: omap4-panda-common: Add watchdog timers for IPU and DSP Suman Anna
2020-07-09 23:19 ` [PATCH 13/13] ARM: dts: omap5-uevm: " Suman Anna
2020-07-10 16:58 ` Tony Lindgren [this message]
2020-07-10 17:17   ` [PATCH 00/13] Add IPU & DSP remoteprocs on OMAP4 and OMAP5 Suman Anna
2020-07-10 17:28     ` Suman Anna
2020-07-10 17:59       ` Tony Lindgren
2020-07-10 18:29         ` Suman Anna
2020-07-10 20:45           ` Suman Anna
2020-07-10 22:08             ` Tony Lindgren
2020-07-10 17:40     ` Tony Lindgren
2020-07-10 18:24       ` Suman Anna
2020-07-13 18:24 ` Tony Lindgren

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