From: Samuel Holland <samuel@sholland.org>
To: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: Chen-Yu Tsai <wens@csie.org>,
Jassi Brar <jassisinghbrar@gmail.com>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>, Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Corentin Labbe <clabbe.montjoie@gmail.com>,
Vasily Khoruzhick <anarsoul@gmail.com>,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-sunxi@googlegroups.com
Subject: Re: [PATCH v4 05/10] ARM: dts: sunxi: a80: Add msgbox node
Date: Tue, 20 Aug 2019 08:17:49 -0500 [thread overview]
Message-ID: <f3e3420e-450a-7d41-edf8-776c0cd5a320@sholland.org> (raw)
In-Reply-To: <20190820081528.7g2lo4njkut5lanu@flea>
Hi,
On 8/20/19 3:15 AM, Maxime Ripard wrote:
> On Mon, Aug 19, 2019 at 10:23:06PM -0500, Samuel Holland wrote:
>> The A80 SoC contains a message box that can be used to send messages and
>> interrupts back and forth between the ARM application CPUs and the ARISC
>> coprocessor. Add a device tree node for it.
>>
>> Signed-off-by: Samuel Holland <samuel@sholland.org>
>
> I think you mentionned that crust has been tested only on the A64 and
> the H3/H5, did you test the mailbox on those other SoCs as well?
No, I only have A64/H3/H5, and recently H6, hardware to test. I've looked
through the manuals to verify that the registers are all the same, but I haven't
run the driver on earlier SoCs.
On 32-bit SoCs, where there's no other user of SRAM A2, it should be easy to get
the toy firmware running. All you should need to do is:
1) Update the MMIO base/clock addresses in drivers/msgbox/sunxi-msgbox.c
2) Update the load address in platform/sun50i/include/platform/memory.h
3) Load the firmware to SRAM A2 (can be done from a U-Boot shell)
4) Initialize the reset vector (algorithm is in tools/test.c:109)
5) Deassert AR100 reset (again, these last two steps can be done from U-Boot)
Thanks,
Samuel
next prev parent reply other threads:[~2019-08-20 13:17 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-20 3:23 [PATCH v4 00/10] Allwinner sunxi message box support Samuel Holland
2019-08-20 3:23 ` [PATCH v4 01/10] clk: sunxi-ng: Mark msgbox clocks as critical Samuel Holland
2019-08-20 3:23 ` [PATCH v4 02/10] clk: sunxi-ng: Mark AR100 " Samuel Holland
2019-08-20 7:11 ` Maxime Ripard
2019-08-20 13:02 ` Samuel Holland
2019-08-21 12:24 ` Maxime Ripard
2019-09-05 18:56 ` Stephen Boyd
2019-08-20 3:23 ` [PATCH v4 03/10] dt-bindings: mailbox: Add a sunxi message box binding Samuel Holland
2019-08-20 7:14 ` Maxime Ripard
2019-08-20 13:04 ` Samuel Holland
2019-08-21 12:07 ` Maxime Ripard
2019-08-20 3:23 ` [PATCH v4 04/10] mailbox: sunxi-msgbox: Add a new mailbox driver Samuel Holland
2019-08-20 8:27 ` Maxime Ripard
2019-08-20 11:18 ` Ondřej Jirman
2019-08-20 13:07 ` Samuel Holland
2019-08-20 13:34 ` Ondřej Jirman
2019-08-21 12:30 ` Maxime Ripard
2019-08-20 3:23 ` [PATCH v4 05/10] ARM: dts: sunxi: a80: Add msgbox node Samuel Holland
2019-08-20 8:15 ` Maxime Ripard
2019-08-20 13:17 ` Samuel Holland [this message]
2019-08-23 14:56 ` Maxime Ripard
2019-08-20 3:23 ` [PATCH v4 06/10] ARM: dts: sunxi: a83t: " Samuel Holland
2019-08-20 3:23 ` [PATCH v4 07/10] ARM: dts: sunxi: h3/h5: " Samuel Holland
2019-08-20 3:23 ` [PATCH v4 08/10] arm64: dts: allwinner: a64: " Samuel Holland
2019-08-20 3:23 ` [PATCH v4 09/10] arm64: dts: allwinner: h6: " Samuel Holland
2019-08-20 3:23 ` [PATCH v4 10/10] [DO NOT MERGE] drivers: firmware: msgbox demo Samuel Holland
2019-09-09 3:22 ` [PATCH v4 00/10] Allwinner sunxi message box support Ondřej Jirman
2019-09-09 3:54 ` Samuel Holland
2019-09-09 12:36 ` Ondřej Jirman
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