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

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Date:   Wed, 30 May 2018 14:55:28 +0200
From:   Clément Péron <peron.clem@...il.com>
To:     baruch@...s.co.il
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 Baruch,

On Wed, 30 May 2018 at 14:47, Baruch Siach <baruch@...s.co.il> wrote:

> Hi Clément,

> 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 ?


> >       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

> baruch

> --
>       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 -

Clement