From: Robert Marko <robert.marko@sartura.hr>
To: Felix Fietkau <nbd@nbd.name>
Cc: Luka Perkov <luka.perkov@sartura.hr>,
Russell King <linux@armlinux.org.uk>,
Arnd Bergmann <arnd@arndb.de>, Olof Johansson <olof@lixom.net>,
soc@kernel.org, Rob Herring <robh+dt@kernel.org>,
linux-mediatek@lists.infradead.org,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
John Crispin <john@phrozen.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
devicetree <devicetree@vger.kernel.org>
Subject: Re: [PATCH v9 03/13] ARM: Add basic support for Airoha EN7523 SoC
Date: Mon, 31 Jan 2022 14:00:25 +0100 [thread overview]
Message-ID: <CA+HBbNE5nRmFAR44gYMW+Uqi_5e4s+4wBGoQTUbnhC0Pdkc6iw@mail.gmail.com> (raw)
In-Reply-To: <04c91b4e-e7c8-ac6a-f60a-0453a49122fa@nbd.name>
On Mon, Jan 31, 2022 at 1:57 PM Felix Fietkau <nbd@nbd.name> wrote:
>
>
> On 31.01.22 11:51, Luka Perkov wrote:
> > Hello Felix,
> >
> > On Sun, Jan 30, 2022 at 3:56 PM Felix Fietkau <nbd@nbd.name> wrote:
> >>
> >> From: John Crispin <john@phrozen.org>
> >>
> >> EN7523 is an armv8 based silicon used inside broadband access type devices
> >> such as xPON and xDSL. It shares various silicon blocks with MediaTek
> >> silicon such as the MT7622.
> >>
> >> Add basic support for Airoha EN7523, enough for booting to console.
> >>
> >> The UART is basically 8250-compatible, except for the clock selection.
> >> A clock-frequency value is synthesized to get this to run at 115200 bps.
> >>
> >> Signed-off-by: John Crispin <john@phrozen.org>
> >> Signed-off-by: Bert Vermeulen <bert@biot.com>
> >> Signed-off-by: Felix Fietkau <nbd@nbd.name>
> >> ---
> >> index 000000000000..ea23b5abb478
> >> --- /dev/null
> >> +++ b/arch/arm/mach-airoha/airoha.c
> >> @@ -0,0 +1,16 @@
> >> +// SPDX-License-Identifier: GPL-2.0-or-later
> >> +/*
> >> + * Device Tree support for Airoha SoCs
> >> + *
> >> + * Copyright (c) 2022 Felix Fietkau <nbd@nbd.name>
> >> + */
> >> +#include <asm/mach/arch.h>
> >> +
> >> +static const char * const airoha_board_dt_compat[] = {
> >> + "airoha,en7523",
> >> + NULL,
> >> +};
> >> +
> >> +DT_MACHINE_START(MEDIATEK_DT, "Airoha Cortex-A53 (Device Tree)")
> >
> > Since this is Cortex-A53 core is there a reason why this is not placed
> > within arm64 directory?
> From what I can tell, it's a stripped-down core that only runs in
> 32-bit mode.
Hmm, this is new for me that you could do that to an ARMv8 (A53) core.
I know that you can run ARMv7 code but not that you can reduce it to
32 bit only.
Regards,
Robert
>
> - Felix
--
Robert Marko
Staff Embedded Linux Engineer
Sartura Ltd.
Lendavska ulica 16a
10000 Zagreb, Croatia
Email: robert.marko@sartura.hr
Web: www.sartura.hr
next prev parent reply other threads:[~2022-01-31 13:00 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20220130145116.88406-1-nbd@nbd.name>
2022-01-30 14:51 ` [PATCH v9 01/13] dt-bindings: Add vendor prefix for Airoha Felix Fietkau
2022-01-30 14:51 ` [PATCH v9 02/13] dt-bindings: arm: airoha: Add binding for EN7523 SoC and EVB Felix Fietkau
2022-01-30 14:51 ` [PATCH v9 03/13] ARM: Add basic support for Airoha EN7523 SoC Felix Fietkau
2022-01-31 10:51 ` Luka Perkov
2022-01-31 12:57 ` Felix Fietkau
2022-01-31 13:00 ` Robert Marko [this message]
2022-01-31 13:12 ` John Crispin
2022-01-30 14:51 ` [PATCH v9 04/13] ARM: multi_v7_defconfig: Add " Felix Fietkau
2022-01-30 14:51 ` [PATCH v9 05/13] dt-bindings: Add en7523-scu device tree binding documentation Felix Fietkau
2022-01-30 14:51 ` [PATCH v9 06/13] clk: en7523: Add clock driver for Airoha EN7523 SoC Felix Fietkau
2022-01-30 14:51 ` [PATCH v9 07/13] ARM: dts: add clock support for Airoha EN7523 Felix Fietkau
2022-01-30 14:51 ` [PATCH v9 08/13] dt-bindings: PCI: Add support for Airoha EN7532 Felix Fietkau
2022-01-30 14:51 ` [PATCH v9 09/13] PCI: mediatek: Allow building for ARCH_AIROHA Felix Fietkau
2022-01-30 14:51 ` [PATCH v9 10/13] ARM: dts: Add PCIe support for Airoha EN7523 Felix Fietkau
2022-01-30 14:51 ` [PATCH v9 11/13] dt-bindings: arm: airoha: Add binding for Airoha GPIO controller Felix Fietkau
2022-02-02 9:16 ` Bartosz Golaszewski
2022-01-30 14:51 ` [PATCH v9 12/13] gpio: Add support for Airoha EN7523 " Felix Fietkau
2022-01-31 11:13 ` Linus Walleij
2022-02-02 9:17 ` Bartosz Golaszewski
2022-01-30 14:51 ` [PATCH v9 13/13] ARM: dts: add GPIO support for Airoha EN7523 Felix Fietkau
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