From: Linus Walleij <linus.walleij@linaro.org>
To: Bartosz Golaszewski <brgl@bgdev.pl>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
William Zhang <william.zhang@broadcom.com>,
Florian Fainelli <florian.fainelli@broadcom.com>
Cc: linux-gpio@vger.kernel.org, devicetree@vger.kernel.org,
Linus Walleij <linus.walleij@linaro.org>
Subject: [PATCH 0/2] Enable MMIO GPIO on BCMBCA
Date: Tue, 17 Sep 2024 14:44:38 +0200 [thread overview]
Message-ID: <20240917-bcmbca-gpio-mmio-v1-0-674bae8664cc@linaro.org> (raw)
The Broadcom BCA (Broadband Access) SoC:s all have a dirt-simple
MMIO GPIO.
It's exposed as a direction register per 32-bit block at
(base) and a data register per 32-bit block at (block+0x20).
However I wouldn't want to use any of the old compatibles
becaus for this undocumented SoC I have a gut feeling that
there may be registers we don't know about at (block+0x40)
etc and a separate compatible will be needed to slot in
a more elaborate driver later.
Let's do this the hard way and create a new compatible,
and probe regular MMIO with that for now.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
Linus Walleij (2):
dt-bindings: gpio: Add BCMBCA to MMIO compatibles
gpio: mmio: Support BCMBCA GPIO compatible
Documentation/devicetree/bindings/gpio/gpio-mmio.yaml | 1 +
drivers/gpio/gpio-mmio.c | 1 +
2 files changed, 2 insertions(+)
---
base-commit: 98f7e32f20d28ec452afb208f9cffc08448a2652
change-id: 20240917-bcmbca-gpio-mmio-5da863cf5a5d
Best regards,
--
Linus Walleij <linus.walleij@linaro.org>
next reply other threads:[~2024-09-17 12:44 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-17 12:44 Linus Walleij [this message]
2024-09-17 12:44 ` [PATCH 1/2] dt-bindings: gpio: Add BCMBCA to MMIO compatibles Linus Walleij
2024-09-17 12:44 ` [PATCH 2/2] gpio: mmio: Support BCMBCA GPIO compatible Linus Walleij
2024-09-17 18:13 ` [PATCH 0/2] Enable MMIO GPIO on BCMBCA William Zhang
2024-09-17 19:03 ` Linus Walleij
2024-09-19 0:42 ` William Zhang
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