linux-kernel - [PATCH 09/11] spi: cadence-qspi: add mobileye,eyeq5-ospi compatible

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Message-Id: <20240308-cdns-qspi-mbly-v1-9-a503856dd205@bootlin.com>
Date: Fri, 08 Mar 2024 18:18:24 +0100
From: Théo Lebrun <theo.lebrun@...tlin.com>
To: Mark Brown <broonie@...nel.org>, Rob Herring <robh+dt@...nel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
 Conor Dooley <conor+dt@...nel.org>, Vaishnav Achath <vaishnav.a@...com>, 
 Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc: linux-spi@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-mips@...r.kernel.org, 
 Vladimir Kondratiev <vladimir.kondratiev@...ileye.com>, 
 Gregory CLEMENT <gregory.clement@...tlin.com>, 
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>, 
 Tawfik Bayouk <tawfik.bayouk@...ileye.com>, 
 Théo Lebrun <theo.lebrun@...tlin.com>
Subject: [PATCH 09/11] spi: cadence-qspi: add mobileye,eyeq5-ospi
 compatible

Declare a new mobileye,eyeq5-ospi compatible. Exploit quirk flags:
detect FIFO depth through SRAMPARTITION register; avoid IRQs during
read operations.

Signed-off-by: Théo Lebrun <theo.lebrun@...tlin.com>
---
 drivers/spi/spi-cadence-quadspi.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/spi/spi-cadence-quadspi.c b/drivers/spi/spi-cadence-quadspi.c
index 2ad9c736f85f..046388cacc66 100644
--- a/drivers/spi/spi-cadence-quadspi.c
+++ b/drivers/spi/spi-cadence-quadspi.c
@@ -2060,6 +2060,13 @@ static const struct cqspi_driver_platdata pensando_cdns_qspi = {
 	.quirks = CQSPI_NEEDS_APB_AHB_HAZARD_WAR | CQSPI_DISABLE_DAC_MODE,
 };
 
+static const struct cqspi_driver_platdata mobileye_eyeq5_ospi = {
+	.hwcaps_mask = CQSPI_SUPPORTS_OCTAL,
+	.quirks = CQSPI_DISABLE_DAC_MODE | CQSPI_NO_SUPPORT_WR_COMPLETION |
+			CQSPI_DETECT_FIFO_DEPTH | CQSPI_RD_NO_IRQ |
+			CQSPI_BUSYWAIT_EARLY,
+};
+
 static const struct of_device_id cqspi_dt_ids[] = {
 	{
 		.compatible = "cdns,qspi-nor",
@@ -2093,6 +2100,10 @@ static const struct of_device_id cqspi_dt_ids[] = {
 		.compatible = "amd,pensando-elba-qspi",
 		.data = &pensando_cdns_qspi,
 	},
+	{
+		.compatible = "mobileye,eyeq5-ospi",
+		.data = &mobileye_eyeq5_ospi,
+	},
 	{ /* end of table */ }
 };
 

-- 
2.44.0