linux-kernel - [PATCH 2/8] spi: cadence-quadspi: Add QSPI support for Pensando Elba SoC

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Message-Id: <20210304034141.7062-3-brad@pensando.io>
Date:   Wed,  3 Mar 2021 19:41:35 -0800
From:   Brad Larson <brad@...sando.io>
To:     linux-arm-kernel@...ts.infradead.org
Cc:     arnd@...db.de, linus.walleij@...aro.org, bgolaszewski@...libre.com,
        broonie@...nel.org, fancer.lancer@...il.com,
        adrian.hunter@...el.com, ulf.hansson@...aro.org, olof@...om.net,
        brad@...sando.io, linux-gpio@...r.kernel.org,
        linux-spi@...r.kernel.org, linux-mmc@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/8] spi: cadence-quadspi: Add QSPI support for Pensando Elba SoC

Add QSPI controller support fo Pensando Elba SoC.

Signed-off-by: Brad Larson <brad@...sando.io>
---
 drivers/spi/spi-cadence-quadspi.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/spi/spi-cadence-quadspi.c b/drivers/spi/spi-cadence-quadspi.c
index 442cc7c53a47..fb0d9b0bd596 100644
--- a/drivers/spi/spi-cadence-quadspi.c
+++ b/drivers/spi/spi-cadence-quadspi.c
@@ -1353,6 +1353,7 @@ static int cqspi_request_mmap_dma(struct cqspi_st *cqspi)
 	cqspi->rx_chan = dma_request_chan_by_mask(&mask);
 	if (IS_ERR(cqspi->rx_chan)) {
 		int ret = PTR_ERR(cqspi->rx_chan);
+
 		cqspi->rx_chan = NULL;
 		return dev_err_probe(&cqspi->pdev->dev, ret, "No Rx DMA available\n");
 	}
@@ -1632,6 +1633,10 @@ static const struct cqspi_driver_platdata intel_lgm_qspi = {
 	.quirks = CQSPI_DISABLE_DAC_MODE,
 };
 
+static const struct cqspi_driver_platdata pen_cdns_qspi = {
+	.quirks = CQSPI_NEEDS_WR_DELAY | CQSPI_DISABLE_DAC_MODE,
+};
+
 static const struct of_device_id cqspi_dt_ids[] = {
 	{
 		.compatible = "cdns,qspi-nor",
@@ -1649,6 +1654,10 @@ static const struct of_device_id cqspi_dt_ids[] = {
 		.compatible = "intel,lgm-qspi",
 		.data = &intel_lgm_qspi,
 	},
+	{
+		.compatible = "pensando,cdns-qspi",
+		.data = &pen_cdns_qspi,
+	},
 	{ /* end of table */ }
 };
 
-- 
2.17.1