From: Zong Li <zong.li@sifive.com>
To: Andreas Schwab <schwab@linux-m68k.org>
Cc: Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Stephen Boyd <sboyd@kernel.org>,
Pragnesh Patel <pragnesh.patel@openfive.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Michael Turquette <mturquette@baylibre.com>,
"linux-kernel@vger.kernel.org List"
<linux-kernel@vger.kernel.org>,
linux-clk@vger.kernel.org,
linux-riscv <linux-riscv@lists.infradead.org>
Subject: Re: [PATCH v7 0/5] clk: add driver for the SiFive FU740
Date: Wed, 31 Mar 2021 16:11:20 +0800 [thread overview]
Message-ID: <CANXhq0r5_xhFu3W9mUFkp_7BYUVBzvHZE1A6jpBDcL_KwTc1cA@mail.gmail.com> (raw)
In-Reply-To: <87h7kukzy4.fsf@igel.home>
On Mon, Mar 29, 2021 at 6:37 PM Andreas Schwab <schwab@linux-m68k.org> wrote:
>
> On Mär 29 2021, Zong Li wrote:
>
> > Yes, I could get the network problem by using the defconfig you
> > provided, the system hung up when executing 'ifconfig' immediately
> > after installing macb driver module, the network can work by only
> > reverting the commit 732374a0b440d9a79c8412f318a25cd37ba6f4e2. But the
> > network is fine by using the mainline's defconfig, this is a little
> > bit weird, I will check that and try to find the difference.
>
> My guess would be that it is an init dependency problem between the phy
> driver and the clock driver, which causes the clock to be enabled too
> late.
>
I found that the gemgxlpll was disabled immediately by power
management after macb driver install. The mainline's defconfig doesn't
enable CONFIG_PM, so the network is fine on it. The opensuse defconfig
enables CONFIG_PM, and the patch
732374a0b440d9a79c8412f318a25cd37ba6f4e2 added the enable/disable
callback functions, so the gemgxlpll PLL, I have no idea why power
management disable it, I would keep trace it.
By the way, I tried to disable CONFIG_PM on oenpsuse defconfig, the
system didn't hang anymore, on the contrary, I enable CONFIG_PM on
mainline's defconfig, I expect that the system would hang up as well,
unfortunately, I cannot boot successfully by just enabling CONFIG_PM
easily.
> Andreas.
>
> --
> Andreas Schwab, schwab@linux-m68k.org
> GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1
> "And now for something completely different."
next prev parent reply other threads:[~2021-03-31 8:12 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-09 9:49 [PATCH v7 0/5] clk: add driver for the SiFive FU740 Zong Li
2020-12-09 9:49 ` [PATCH v7 1/5] clk: sifive: Extract prci core to common base Zong Li
2020-12-16 20:21 ` Stephen Boyd
2020-12-09 9:49 ` [PATCH v7 2/5] clk: sifive: Use common name for prci configuration Zong Li
2020-12-16 20:21 ` Stephen Boyd
2020-12-09 9:49 ` [PATCH v7 3/5] clk: sifive: Add a driver for the SiFive FU740 PRCI IP block Zong Li
2020-12-16 20:21 ` Stephen Boyd
2020-12-09 9:49 ` [PATCH v7 4/5] clk: sifive: Fix the wrong bit field shift Zong Li
2020-12-16 20:21 ` Stephen Boyd
2020-12-09 9:49 ` [PATCH v7 5/5] clk: sifive: Add clock enable and disable ops Zong Li
2020-12-16 20:21 ` Stephen Boyd
2021-03-16 19:45 ` [PATCH v7 0/5] clk: add driver for the SiFive FU740 Andreas Schwab
2021-03-18 2:07 ` Zong Li
2021-03-19 8:20 ` Zong Li
2021-03-19 8:44 ` Yixun Lan
2021-03-19 8:49 ` Andreas Schwab
2021-03-24 10:36 ` Andreas Schwab
2021-03-25 3:21 ` Zong Li
2021-03-25 9:22 ` Andreas Schwab
2021-03-26 9:10 ` Zong Li
2021-03-26 9:23 ` Andreas Schwab
2021-03-29 10:18 ` Zong Li
2021-03-29 10:37 ` Andreas Schwab
2021-03-31 8:11 ` Zong Li [this message]
2021-04-12 11:31 ` Andreas Schwab
2021-04-14 14:13 ` Zong Li
2021-05-11 8:53 ` Yixun Lan
2021-05-19 15:53 ` Zong Li
2021-05-19 18:17 ` Geert Uytterhoeven
2021-05-21 10:34 ` Zong Li
2021-05-21 12:52 ` Zong Li
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