From: Krishna Yarlagadda <kyarlagadda@nvidia.com>
To: <broonie@kernel.org>, <thierry.reding@gmail.com>,
<jonathanh@nvidia.com>, <linux-spi@vger.kernel.org>,
<linux-tegra@vger.kernel.org>
Cc: <skomatineni@nvidia.com>, <ldewangan@nvidia.com>,
<robh+dt@kernel.org>, <devicetree@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <p.zabel@pengutronix.de>,
Krishna Yarlagadda <kyarlagadda@nvidia.com>
Subject: [PATCH 5/6] dt-bindings: spi: Tegra QUAD SPI combined sequence
Date: Fri, 4 Feb 2022 15:59:35 +0530 [thread overview]
Message-ID: <1643970576-31503-6-git-send-email-kyarlagadda@nvidia.com> (raw)
In-Reply-To: <1643970576-31503-1-git-send-email-kyarlagadda@nvidia.com>
Tegra194 and later chips support combined sequence mode which result
in less interrupts and better perf. This flag helps enable it.
Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com>
---
Documentation/devicetree/bindings/spi/nvidia,tegra210-quad.yaml | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/Documentation/devicetree/bindings/spi/nvidia,tegra210-quad.yaml b/Documentation/devicetree/bindings/spi/nvidia,tegra210-quad.yaml
index 6efea89..3767059 100644
--- a/Documentation/devicetree/bindings/spi/nvidia,tegra210-quad.yaml
+++ b/Documentation/devicetree/bindings/spi/nvidia,tegra210-quad.yaml
@@ -46,6 +46,14 @@ properties:
- const: rx
- const: tx
+ nvidia,cmb-xfer:
+ description:
+ Enable combined sequence transfers for read and program sequence
+ if supported by hardware. Tegra194 and later chips support this
+ feature. Default is non combined sequence. SPI message should
+ contain CMD-ADDR-DATA transfers to combine and send to hardware.
+ type: boolean
+
patternProperties:
"@[0-9a-f]+":
type: object
--
2.7.4
next prev parent reply other threads:[~2022-02-04 10:30 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-04 10:29 [PATCH 0/6] Tegra QUAD SPI combined sequence mode Krishna Yarlagadda
2022-02-04 10:29 ` [PATCH 1/6] spi: tegra210-quad: use device_reset method Krishna Yarlagadda
2022-02-04 10:29 ` [PATCH 2/6] dt-bindings: spi: Tegra234 QUAD SPI compatible Krishna Yarlagadda
2022-02-11 14:48 ` Rob Herring
2022-02-14 16:18 ` [PATCH 2/6] " Mark Brown
2022-02-04 10:29 ` [PATCH 3/6] spi: tegra210-quad: add new chips to compatible Krishna Yarlagadda
2022-02-04 10:29 ` [PATCH 4/6] spi: tegra210-quad: add acpi support Krishna Yarlagadda
2022-02-04 10:29 ` Krishna Yarlagadda [this message]
2022-02-04 13:47 ` [PATCH 5/6] dt-bindings: spi: Tegra QUAD SPI combined sequence Mark Brown
2022-02-04 10:29 ` [PATCH 6/6] spi: tegra210-quad: combined sequence mode Krishna Yarlagadda
2022-02-04 14:09 ` Mark Brown
2022-02-07 14:54 ` Krishna Yarlagadda
2022-02-07 15:05 ` Mark Brown
2022-02-07 15:40 ` Krishna Yarlagadda
2022-02-24 22:59 ` (subset) [PATCH 0/6] Tegra QUAD SPI " Mark Brown
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