linux-kernel - [PATCH V4 2/7] dt-bindings: gpio: Add binding for Versal gpio

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Message-Id: <1592393847-1415-3-git-send-email-srinivas.neeli@xilinx.com>
Date:   Wed, 17 Jun 2020 17:07:22 +0530
From:   Srinivas Neeli <srinivas.neeli@...inx.com>
To:     linus.walleij@...aro.org, bgolaszewski@...libre.com,
        michal.simek@...inx.com, shubhrajyoti.datta@...inx.com,
        sgoud@...inx.com
Cc:     linux-gpio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, git@...inx.com
Subject: [PATCH V4 2/7] dt-bindings: gpio: Add binding for Versal gpio

From: Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>

Add binding for Versal binding.

Versal devices are the industry's first adaptive compute
acceleration platforms.
https://www.xilinx.com/support/documentation/data_sheets/ds950-versal-overview.pdf

On the Versal platform, we are using two customized GPIO controllers(IP)
which were used in Zynq/ZynqMp platform.
One of them present in the Platform Management Controller(PMC) block and
other in Processing System(PS) block.

In PMC_GPIO only Bank0,1,3 & 4 are enabled and in PS_GPIO only
Bank 0 & 3 are enabled.

You can find more details of GPIO IP in ZynqMP TRM General Purpose
I/O(Chapter-27).
https://www.xilinx.com/support/documentation/user_guides/ug1085-zynq-ultrascale-trm.pdf

Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>
Signed-off-by: Michal Simek <michal.simek@...inx.com>
---
 Documentation/devicetree/bindings/gpio/gpio-zynq.txt | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/gpio/gpio-zynq.txt b/Documentation/devicetree/bindings/gpio/gpio-zynq.txt
index 4fa4eb5507cd..4806d846c0fc 100644
--- a/Documentation/devicetree/bindings/gpio/gpio-zynq.txt
+++ b/Documentation/devicetree/bindings/gpio/gpio-zynq.txt
@@ -6,7 +6,8 @@ Required properties:
 			  - First cell is the GPIO line number
 			  - Second cell is used to specify optional
 			    parameters (unused)
-- compatible		: Should be "xlnx,zynq-gpio-1.0" or "xlnx,zynqmp-gpio-1.0"
+- compatible		: Should be "xlnx,zynq-gpio-1.0" or
+			  "xlnx,zynqmp-gpio-1.0" or "xlnx,versal-gpio-1.0
 - clocks		: Clock specifier (see clock bindings for details)
 - gpio-controller	: Marks the device node as a GPIO controller.
 - interrupts		: Interrupt specifier (see interrupt bindings for
-- 
2.7.4