linux-kernel - Re: [PATCH] ARM: debug: Add Iproc UART3 debug addresses

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Message-ID: <20180530130742.pwffhb3iysj7auho@sapphire.tkos.co.il>
Date:   Wed, 30 May 2018 16:07:42 +0300
From:   Baruch Siach <baruch@...s.co.il>
To:     Clément Péron <peron.clem@...il.com>
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        linux-arm-kernel@...ts.infradead.org,
        Scott Branden <sbranden@...adcom.com>,
        Tony Lindgren <tony@...mide.com>, Ray Jui <rjui@...adcom.com>,
        Russell King <linux@...linux.org.uk>,
        linux-kernel@...r.kernel.org, Jon Mason <jonmason@...adcom.com>,
        Clément Peron <clement.peron@...ialet.com>,
        BCM Kernel Feedback <bcm-kernel-feedback-list@...adcom.com>,
        Laura Abbott <labbott@...hat.com>
Subject: Re: [PATCH] ARM: debug: Add Iproc UART3 debug addresses

Hi Clément,

On Wed, May 30, 2018 at 02:55:28PM +0200, Clément Péron wrote:
> On Wed, 30 May 2018 at 14:47, Baruch Siach <baruch@...s.co.il> wrote:
> > On Wed, May 30, 2018 at 02:29:22PM +0200, Clément Péron wrote:
> > > From: Clément Peron <clement.peron@...ialet.com>
> > >
> > > Broadcom Iproc SoCs typically use the UART3 for
> > > debug/console, provide a known good location for that.
> > >
> > > Signed-off-by: Clément Peron <clement.peron@...ialet.com>
> > > ---
> > >  arch/arm/Kconfig.debug | 12 +++++++++++-
> > >  1 file changed, 11 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
> > > index 199ebc1c4538..fa6fa1dae94d 100644
> > > --- a/arch/arm/Kconfig.debug
> > > +++ b/arch/arm/Kconfig.debug
> > > @@ -207,6 +207,14 @@ choice
> > >               depends on ARCH_BCM_HR2
> > >               select DEBUG_UART_8250
> > >
> > > +     config DEBUG_BCM_IPROC_UART3
> > > +             bool "Kernel low-level debugging on BCM IPROC UART3"
> > > +             depends on ARCH_BCM_CYGNUS
> > > +             select DEBUG_UART_8250
> > > +             help
> > > +               Say Y here if you want the debug print routines to
> direct
> > > +               their output to the third serial port on these devices.
> > > +
> > >       config DEBUG_BCM_KONA_UART
> > >               bool "Kernel low-level debugging messages via BCM KONA
> UART"
> > >               depends on ARCH_BCM_MOBILE
> > > @@ -1564,6 +1572,7 @@ config DEBUG_UART_PHYS
> > >       default 0x20068000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
> > >       default 0x20201000 if DEBUG_BCM2835
> > >       default 0x3f201000 if DEBUG_BCM2836
> > > +     default 0x18023000 if DEBUG_BCM_IPROC_UART3
> 
> > Entries are sorted by the address value. Except that DEBUG_BCM_KONA_UART
> > should be listed above DEBUG_BCM2836.
> 
> Indeed, can I fix the DEBUG_BCM_KONA_UART entry in the same commit ?

That is an unrelated fix, so a separate patch is preferred.

baruch

> > >       default 0x3e000000 if DEBUG_BCM_KONA_UART
> > >       default 0x4000e400 if DEBUG_LL_UART_EFM32
> > >       default 0x40028000 if DEBUG_AT91_SAMV7_USART1
> > > @@ -1730,6 +1739,7 @@ config DEBUG_UART_VIRT
> > >       default 0xfe018000 if DEBUG_MMP_UART3
> > >       default 0xfe100000 if DEBUG_IMX23_UART || DEBUG_IMX28_UART
> > >       default 0xfe230000 if DEBUG_PICOXCELL_UART
> > > +     default 0xf1023000 if DEBUG_BCM_IPROC_UART3
> 
> > Same here.
> 
> > >       default 0xfe300000 if DEBUG_BCM_KONA_UART
> > >       default 0xfe800000 if ARCH_IOP32X
> > >       default 0xfeb00000 if DEBUG_HI3620_UART || DEBUG_HIX5HD2_UART
> > > @@ -1791,7 +1801,7 @@ config DEBUG_UART_8250_WORD
> > >               DEBUG_KEYSTONE_UART0 || DEBUG_KEYSTONE_UART1 || \
> > >               DEBUG_ALPINE_UART0 || \
> > >               DEBUG_DAVINCI_DMx_UART0 || DEBUG_DAVINCI_DA8XX_UART1 || \
> > > -             DEBUG_DAVINCI_DA8XX_UART2 || \
> > > +             DEBUG_DAVINCI_DA8XX_UART2 || DEBUG_BCM_IPROC_UART3 || \
> > >               DEBUG_BCM_KONA_UART || DEBUG_RK32_UART2

-- 
     http://baruch.siach.name/blog/                  ~. .~   Tk Open Systems
=}------------------------------------------------ooO--U--Ooo------------{=
   - baruch@...s.co.il - tel: +972.2.679.5364, http://www.tkos.co.il -