linux-kernel - [PATCH 04/13] dt-bindings: serial: samsung: gs101: make reg-io-width required property

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Message-ID: <20231214105243.3707730-5-tudor.ambarus@linaro.org>
Date:   Thu, 14 Dec 2023 10:52:34 +0000
From:   Tudor Ambarus <tudor.ambarus@...aro.org>
To:     peter.griffin@...aro.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, mturquette@...libre.com,
        sboyd@...nel.org, conor+dt@...nel.org, andi.shyti@...nel.org,
        alim.akhtar@...sung.com, gregkh@...uxfoundation.org,
        jirislaby@...nel.org, catalin.marinas@....com, will@...nel.org,
        s.nawrocki@...sung.com, tomasz.figa@...il.com,
        cw00.choi@...sung.com, arnd@...db.de, semen.protsenko@...aro.org
Cc:     andre.draszik@...aro.org, saravanak@...gle.com,
        willmcvicker@...gle.com, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-i2c@...r.kernel.org, linux-serial@...r.kernel.org,
        Tudor Ambarus <tudor.ambarus@...aro.org>
Subject: [PATCH 04/13] dt-bindings: serial: samsung: gs101: make reg-io-width required property

GS101 only allows 32-bit register accesses. When using 8-bit reg
accesses on gs101, a SError Interrupt is raised causing the system
unusable.

Make reg-io-width a required property and expect for it a value of 4.

Signed-off-by: Tudor Ambarus <tudor.ambarus@...aro.org>
---
 Documentation/devicetree/bindings/serial/samsung_uart.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/serial/samsung_uart.yaml b/Documentation/devicetree/bindings/serial/samsung_uart.yaml
index 133259ed3a34..cc896d7e2a3d 100644
--- a/Documentation/devicetree/bindings/serial/samsung_uart.yaml
+++ b/Documentation/devicetree/bindings/serial/samsung_uart.yaml
@@ -143,6 +143,10 @@ allOf:
     then:
       required:
         - samsung,uart-fifosize
+        - reg-io-width
+      properties:
+        reg-io-width:
+          const: 4
 
 unevaluatedProperties: false
 
-- 
2.43.0.472.g3155946c3a-goog