linux-kernel - Re: [PATCH v4 0/8] ARM: davinci: complete the conversion to using the reset framework

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Message-ID: <44218403-5e7f-dd12-6d01-a52987fc4cc8@ti.com>
Date:   Tue, 27 Mar 2018 10:54:54 +0530
From:   Sekhar Nori <nsekhar@...com>
To:     Suman Anna <s-anna@...com>, Bartosz Golaszewski <brgl@...ev.pl>,
        Stephen Boyd <sboyd@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Ohad Ben-Cohen <ohad@...ery.com>
CC:     David Lechner <david@...hnology.com>,
        Kevin Hilman <khilman@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Michael Turquette <mturquette@...libre.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Rob Herring <robh+dt@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        devicetree <devicetree@...r.kernel.org>,
        <linux-remoteproc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        <linux-clk@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v4 0/8] ARM: davinci: complete the conversion to using the
 reset framework

Hi Suman,

On Tuesday 27 March 2018 06:12 AM, Suman Anna wrote:
> I tried booting your tree [3] on the OMAPL138-LCDK board. I am using
> NFS, and I am unable to get to the console. I don't have any issues
> booting latest -next branch (next-20180326) which only has the reset and
> clock driver related changes.
> 
> Here's the log towards the end of the boot..
> ---
> pinctrl-single 1c14120.pinmux: 160 pins, size 80
> Serial: 8250/16550 driver, 3 ports, IRQ sharing disabled
> console [ttyS2] disabled
> 1d0d000.serial: ttyS2 at MMIO 0x1d0d000 (irq = 61, base_baud = 8250000)
> is a TI DA8xx/66AK2x
> console [ttyS2] enabled
> brd: module loaded
> libphy: Fixed MDIO Bus: probed
> davinci_mdio 1e24000.mdio: davinci mdio revision 1.5, bus freq 2200000
> davinci_mdio 1e24000.mdio: no live phy, scanning all
> davinci_mdio: probe of 1e24000.mdio failed with error -5
> i2c /dev entries driver
> <nothing after this>

This is because of a bug in bootloader PLL configuration which got
uncovered only with CCF conversion. The bootloader that comes
pre-flashed with the board or the latest U-Boot master should work fine.

Here is the log with latest U-Boot master:
https://pastebin.ubuntu.com/p/HkwY9g4YDc/

Thanks,
Sekhar