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From: Pratyush Yadav <p.yadav@ti.com>
To: Vinod Koul <vkoul@kernel.org>
Cc: Nikhil Devshatwar <nikhil.nd@ti.com>,
	Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>,
	Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
	Paul Kocialkowski <paul.kocialkowski@bootlin.com>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	Pratyush Yadav <p.yadav@ti.com>,
	Kishon Vijay Abraham I <kishon@ti.com>,
	<linux-kernel@vger.kernel.org>, <linux-phy@lists.infradead.org>
Subject: [PATCH v3 1/7] phy: Distinguish between Rx and Tx for MIPI D-PHY with submodes
Date: Fri, 25 Jun 2021 00:11:02 +0530	[thread overview]
Message-ID: <20210624184108.21312-2-p.yadav@ti.com> (raw)
In-Reply-To: <20210624184108.21312-1-p.yadav@ti.com>

From: Paul Kocialkowski <paul.kocialkowski@bootlin.com>

As some D-PHY controllers support both Rx and Tx mode, we need a way for
users to explicitly request one or the other. For instance, Rx mode can
be used along with MIPI CSI-2 while Tx mode can be used with MIPI DSI.

Introduce new MIPI D-PHY PHY submodes to use with PHY_MODE_MIPI_DPHY.
The default (zero value) is kept to Tx so only the rkisp1 driver, which
uses D-PHY in Rx mode, needs to be adapted.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
---

(no changes since v1)

 include/linux/phy/phy-mipi-dphy.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/include/linux/phy/phy-mipi-dphy.h b/include/linux/phy/phy-mipi-dphy.h
index a877ffee845d..0f57ef46a8b5 100644
--- a/include/linux/phy/phy-mipi-dphy.h
+++ b/include/linux/phy/phy-mipi-dphy.h
@@ -6,6 +6,19 @@
 #ifndef __PHY_MIPI_DPHY_H_
 #define __PHY_MIPI_DPHY_H_
 
+/**
+ * enum phy_mipi_dphy_submode - MIPI D-PHY sub-mode
+ *
+ * A MIPI D-PHY can be used to transmit or receive data.
+ * Since some controllers can support both, the direction to enable is specified
+ * with the PHY sub-mode. Transmit is assumed by default with phy_set_mode.
+ */
+
+enum phy_mipi_dphy_submode {
+	PHY_MIPI_DPHY_SUBMODE_TX = 0,
+	PHY_MIPI_DPHY_SUBMODE_RX,
+};
+
 /**
  * struct phy_configure_opts_mipi_dphy - MIPI D-PHY configuration set
  *
-- 
2.30.0


  reply	other threads:[~2021-06-24 18:41 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-24 18:41 [PATCH v3 0/7] Rx mode support for Cadence DPHY Pratyush Yadav
2021-06-24 18:41 ` Pratyush Yadav [this message]
2021-08-06 11:11   ` [PATCH v3 1/7] phy: Distinguish between Rx and Tx for MIPI D-PHY with submodes Paul Kocialkowski
2021-08-11 17:36     ` Pratyush Yadav
2021-06-24 18:41 ` [PATCH v3 2/7] phy: cdns-dphy: Prepare for Rx support Pratyush Yadav
2021-08-06 10:18   ` Vinod Koul
2021-08-11 17:39     ` Pratyush Yadav
2021-06-24 18:41 ` [PATCH v3 3/7] phy: cdns-dphy: Allow setting mode Pratyush Yadav
2021-06-24 18:41 ` [PATCH v3 4/7] phy: cdns-dphy: Add Rx support Pratyush Yadav
2021-08-06 11:15   ` Vinod Koul
2021-08-11 17:33     ` Pratyush Yadav
2021-06-24 18:41 ` [PATCH v3 5/7] phy: dt-bindings: Convert Cadence DPHY binding to YAML Pratyush Yadav
2021-06-24 18:41 ` [PATCH v3 6/7] phy: dt-bindings: cdns,dphy: make clocks optional Pratyush Yadav
2021-06-24 18:41 ` [PATCH v3 7/7] phy: dt-bindings: cdns,dphy: add power-domains property Pratyush Yadav

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