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Message-Id: <20220629184343.3438856-5-mail@conchuod.ie>
Date: Wed, 29 Jun 2022 19:43:33 +0100
From: Conor Dooley <mail@...chuod.ie>
To: David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Thierry Reding <thierry.reding@...il.com>,
Sam Ravnborg <sam@...nborg.org>,
Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>,
Vinod Koul <vkoul@...nel.org>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>,
Serge Semin <fancer.lancer@...il.com>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
Palmer Dabbelt <palmer@...belt.com>,
Palmer Dabbelt <palmer@...osinc.com>
Cc: Thomas Gleixner <tglx@...utronix.de>,
Paul Walmsley <paul.walmsley@...ive.com>,
Albert Ou <aou@...s.berkeley.edu>,
Conor Dooley <conor.dooley@...rochip.com>,
Masahiro Yamada <masahiroy@...nel.org>,
Damien Le Moal <damien.lemoal@...nsource.wdc.com>,
Geert Uytterhoeven <geert@...ux-m68k.org>,
Niklas Cassel <niklas.cassel@....com>,
Dillon Min <dillon.minfei@...il.com>,
Jose Abreu <joabreu@...opsys.com>,
dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, dmaengine@...r.kernel.org,
alsa-devel@...a-project.org, linux-spi@...r.kernel.org,
linux-riscv@...ts.infradead.org
Subject: [PATCH v3 04/15] spi: dt-bindings: dw-apb-ssi: update spi-{r,t}x-bus-width
From: Conor Dooley <conor.dooley@...rochip.com>
Most users of dw-apb-ssi use spi-{r,t}x-bus-width of 1, however the
Canaan k210 is wired up for a width of 4.
Quoting Serge:
The modern DW APB SSI controllers of v.4.* and newer also support the
enhanced SPI Modes too (Dual, Quad and Octal). Since the IP-core
version is auto-detected at run-time there is no way to create a
DT-schema correctly constraining the Rx/Tx SPI bus widths.
/endquote
As such, drop the restriction on only supporting a bus width of 1.
Link: https://lore.kernel.org/all/20220620205654.g7fyipwytbww5757@mobilestation/
Signed-off-by: Conor Dooley <conor.dooley@...rochip.com>
---
Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml | 6 ------
1 file changed, 6 deletions(-)
diff --git a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
index e25d44c218f2..0a43d6e0ef91 100644
--- a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
+++ b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
@@ -143,12 +143,6 @@ patternProperties:
minimum: 0
maximum: 3
- spi-rx-bus-width:
- const: 1
-
- spi-tx-bus-width:
- const: 1
-
unevaluatedProperties: false
required:
--
2.36.1
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