linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Sowjanya Komatineni <skomatineni@nvidia.com>
To: <thierry.reding@gmail.com>, <jonathanh@nvidia.com>,
	<talho@nvidia.com>, <skomatineni@nvidia.com>,
	<broonie@kernel.org>, <robh+dt@kernel.org>,
	<mark.rutland@arm.com>, <kyarlagadda@nvidia.com>
Cc: <ldewangan@nvidia.com>, <linux-tegra@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>, <linux-spi@vger.kernel.org>,
	<devicetree@vger.kernel.org>
Subject: [PATCH V1 19/26] DT bindings: spi: add spi client device properties
Date: Tue, 26 Mar 2019 22:56:40 -0700	[thread overview]
Message-ID: <1553666207-11414-19-git-send-email-skomatineni@nvidia.com> (raw)
In-Reply-To: <1553666207-11414-1-git-send-email-skomatineni@nvidia.com>

This patch adds below cs timing properties to allow SPI master configuring
setup, hold and time interval between two SPI transactions to meet specific
SPI client device requirements.
 CS setup time
 CS hold time
 CS inactive delay
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1;
	t=1553666253; bh=TbJVgRAIkjok3TkKNkfcvYc4WGyZhOpiH6sUZvadGrQ=;
	h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer:
	 In-Reply-To:References:X-NVConfidentiality:MIME-Version:
	 Content-Type;
	b=Tud9guY5XCzkjKA2k2n0+xO/vTfMTNhH1e0viAyYmlgoG/j+uSBAAmOeZucVUlmEa
	 rwqxlSm+rkYMUfgSWqmJXqEjgRIAqMhA32FOJmhgpblGwYUR22hnbdhbk4TcqMNsIO
	 mXBgiIq3sOB7dKCDIv4+YSUreRrnXrvrDN0NE9zN7D+AQWYLF5dI4v+UDalNYJU2hz
	 TusNrURxuHgtpModvYVQRPgPDv+nJ2QE6L7yZH/M6XP7jYprtQHWnHAiMwqqSXBcrf
	 8vlhV96anQSaGkioOUTp8ThlHSwBKLRFHRofVlrhT53K0xvTCvVst4aHvA1aq3QPw0
	 sVr25yohIPq7w==

Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
---
 Documentation/devicetree/bindings/spi/nvidia,tegra114-spi.txt | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/spi/nvidia,tegra114-spi.txt b/Documentation/devicetree/bindings/spi/nvidia,tegra114-spi.txt
index 9ba7c5a273b4..6167c5234b64 100644
--- a/Documentation/devicetree/bindings/spi/nvidia,tegra114-spi.txt
+++ b/Documentation/devicetree/bindings/spi/nvidia,tegra114-spi.txt
@@ -23,6 +23,13 @@ Required properties:
 Recommended properties:
 - spi-max-frequency: Definition as per
                      Documentation/devicetree/bindings/spi/spi-bus.txt
+
+spi-client device controller properties:
+- nvidia,cs-setup-clk-count: CS setup timing parameter.
+- nvidia,cs-hold-clk-count: CS hold timing parameter.
+- nvidia,cs-inactive-cycles: CS inactive delay in terms of clock between
+  transfers.
+
 Example:
 
 spi@7000d600 {
-- 
2.7.4


  parent reply	other threads:[~2019-03-27  5:58 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-27  5:56 [PATCH V1 01/26] spi: tegra114: fix PIO transfer Sowjanya Komatineni
2019-03-27  5:56 ` [PATCH V1 02/26] spi: tegra114: clear packed bit for unpacked mode Sowjanya Komatineni
2019-04-01  8:54   ` Applied "spi: tegra114: clear packed bit for unpacked mode" to the spi tree Mark Brown
2019-03-27  5:56 ` [PATCH V1 03/26] spi: tegra114: fix for unpacked mode transfers Sowjanya Komatineni
2019-04-01  8:54   ` Applied "spi: tegra114: fix for unpacked mode transfers" to the spi tree Mark Brown
2019-03-27  5:56 ` [PATCH V1 04/26] spi: tegra114: use packed mode for 32 bits per word Sowjanya Komatineni
2019-04-01  7:39   ` Mark Brown
2019-04-01 18:38     ` Sowjanya Komatineni
2019-04-01  8:54   ` Applied "spi: tegra114: use packed mode for 32 bits per word" to the spi tree Mark Brown
2019-03-27  5:56 ` [PATCH V1 05/26] spi: tegra114: use unpacked mode for below 4 byte transfers Sowjanya Komatineni
2019-04-01  8:26   ` Mark Brown
2019-03-27  5:56 ` [PATCH V1 06/26] spi: tegra114: terminate dma and reset on transfer timeout Sowjanya Komatineni
2019-04-01  8:54   ` Applied "spi: tegra114: terminate dma and reset on transfer timeout" to the spi tree Mark Brown
2019-03-27  5:56 ` [PATCH V1 07/26] spi: tegra114: flush fifos Sowjanya Komatineni
2019-04-01  8:54   ` Applied "spi: tegra114: flush fifos" to the spi tree Mark Brown
2019-03-27  5:56 ` [PATCH V1 08/26] spi: tegra114: configure dma burst size to fifo trig level Sowjanya Komatineni
2019-03-27  5:56 ` [PATCH V1 09/26] spi: tegra114: dump SPI registers during timeout Sowjanya Komatineni
2019-04-01  7:39   ` Mark Brown
2019-03-27  5:56 ` [PATCH V1 10/26] spi: tegra114: avoid reset call in atomic context Sowjanya Komatineni
2019-03-27  5:56 ` [PATCH V1 11/26] spi: tegra114: reset controller on probe Sowjanya Komatineni
2019-04-01  8:54   ` Applied "spi: tegra114: reset controller on probe" to the spi tree Mark Brown
2019-03-27  5:56 ` [PATCH V1 12/26] spi: tegra114: add SPI_LSB_FIRST support Sowjanya Komatineni
2019-04-01  8:54   ` Applied "spi: tegra114: add SPI_LSB_FIRST support" to the spi tree Mark Brown
2019-03-27  5:56 ` [PATCH V1 13/26] spi: tegra114: add dual mode support Sowjanya Komatineni
2019-03-27  5:56 ` [PATCH V1 14/26] spi: tegra114: add 3 wire transfer " Sowjanya Komatineni
2019-03-27  5:56 ` [PATCH V1 15/26] spi: tegra114: set supported bits_per_word Sowjanya Komatineni
2019-03-27  5:56 ` [PATCH V1 16/26] spi: tegra114: set bus number based on id Sowjanya Komatineni
2019-03-27  5:56 ` [PATCH V1 17/26] spi: tegra114: add support for interrupt mask Sowjanya Komatineni
2019-03-27  5:56 ` [PATCH V1 18/26] spi: tegra114: add support for hw based cs Sowjanya Komatineni
2019-04-01  7:48   ` Mark Brown
2019-04-01 18:40     ` Sowjanya Komatineni
2019-03-27  5:56 ` Sowjanya Komatineni [this message]
2019-04-01  7:37   ` [PATCH V1 19/26] DT bindings: spi: add spi client device properties Mark Brown
2019-04-01 17:59     ` Sowjanya Komatineni
2019-04-02  4:52       ` Mark Brown
2019-03-27  5:56 ` [PATCH V1 20/26] spi: tegra114: add support for tuning HW CS timing Sowjanya Komatineni
2019-03-27  5:56 ` [PATCH V1 21/26] DT bindings: spi: add tx/rx clock delay SPI client properties Sowjanya Komatineni
2019-03-31  6:42   ` Rob Herring
2019-04-02 20:27     ` Sowjanya Komatineni
2019-03-27  5:56 ` [PATCH V1 22/26] spi: tegra114: add support for tuning clock delay Sowjanya Komatineni
2019-03-27  5:56 ` [PATCH V1 23/26] spi: tegra114: add support for gpio based cs Sowjanya Komatineni
2019-03-27  5:56 ` [PATCH V1 24/26] spi: tegra114: de-assert CS before SPI mode is reset to its default Sowjanya Komatineni
2019-04-01  7:49   ` Mark Brown
2019-04-01 18:07     ` Sowjanya Komatineni
2019-04-02  4:52       ` Mark Brown
2019-03-27  5:56 ` [PATCH V1 25/26] spi: expand mode and mode_bits support Sowjanya Komatineni
2019-03-27  5:56 ` [PATCH V1 26/26] spi: tegra114: add support for LSBYTE_FIRST Sowjanya Komatineni

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1553666207-11414-19-git-send-email-skomatineni@nvidia.com \
    --to=skomatineni@nvidia.com \
    --cc=broonie@kernel.org \
    --cc=devicetree@vger.kernel.org \
    --cc=jonathanh@nvidia.com \
    --cc=kyarlagadda@nvidia.com \
    --cc=ldewangan@nvidia.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-spi@vger.kernel.org \
    --cc=linux-tegra@vger.kernel.org \
    --cc=mark.rutland@arm.com \
    --cc=robh+dt@kernel.org \
    --cc=talho@nvidia.com \
    --cc=thierry.reding@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).