From: "Ramuthevar,Vadivel MuruganX" <vadivel.muruganx.ramuthevar@linux.intel.com>
To: broonie@kernel.org, vigneshr@ti.com, tudor.ambarus@microchip.com,
linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org,
robh+dt@kernel.org
Cc: devicetree@vger.kernel.org, miquel.raynal@bootlin.com,
simon.k.r.goldschmidt@gmail.com, dinguyen@kernel.org,
richard@nod.at, cheol.yong.kim@intel.com, qi-ming.wu@intel.com,
Ramuthevar Vadivel Murugan
<vadivel.muruganx.ramuthevar@linux.intel.com>
Subject: [PATCH v6 3/6] spi: cadence-quadspi: Add multi-chipselect support for Intel LGM SoC
Date: Fri, 30 Oct 2020 13:31:50 +0800 [thread overview]
Message-ID: <20201030053153.5319-4-vadivel.muruganx.ramuthevar@linux.intel.com> (raw)
In-Reply-To: <20201030053153.5319-1-vadivel.muruganx.ramuthevar@linux.intel.com>
From: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@linux.intel.com>
Add multiple chipselect support for Intel LGM SoCs,
currently QSPI-NOR and QSPI-NAND supported.
Signed-off-by: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@linux.intel.com>
---
drivers/spi/spi-cadence-quadspi.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/spi/spi-cadence-quadspi.c b/drivers/spi/spi-cadence-quadspi.c
index 6d6f7c440ece..c4440797db43 100644
--- a/drivers/spi/spi-cadence-quadspi.c
+++ b/drivers/spi/spi-cadence-quadspi.c
@@ -38,6 +38,7 @@
/* Capabilities */
#define CQSPI_SUPPORTS_OCTAL BIT(0)
+#define CQSPI_SUPPORTS_MULTI_CHIPSELECT BIT(1)
struct cqspi_st;
@@ -75,6 +76,7 @@ struct cqspi_st {
bool is_decoded_cs;
u32 fifo_depth;
u32 fifo_width;
+ u32 num_chipselect;
bool rclk_en;
u32 trigger_address;
u32 wr_delay;
@@ -1049,6 +1051,7 @@ static int cqspi_of_get_flash_pdata(struct platform_device *pdev,
static int cqspi_of_get_pdata(struct cqspi_st *cqspi)
{
+ const struct cqspi_driver_platdata *ddata;
struct device *dev = &cqspi->pdev->dev;
struct device_node *np = dev->of_node;
@@ -1070,6 +1073,15 @@ static int cqspi_of_get_pdata(struct cqspi_st *cqspi)
return -ENXIO;
}
+ ddata = of_device_get_match_data(dev);
+ if (ddata->hwcaps_mask & CQSPI_SUPPORTS_MULTI_CHIPSELECT) {
+ if (of_property_read_u32(np, "num-chipselect",
+ &cqspi->num_chipselect)) {
+ dev_err(dev, "couldn't determine number of cs\n");
+ return -ENXIO;
+ }
+ }
+
cqspi->rclk_en = of_property_read_bool(np, "cdns,rclk-en");
return 0;
@@ -1307,6 +1319,9 @@ static int cqspi_probe(struct platform_device *pdev)
cqspi->current_cs = -1;
cqspi->sclk = 0;
+ if (ddata->hwcaps_mask & CQSPI_SUPPORTS_MULTI_CHIPSELECT)
+ master->num_chipselect = cqspi->num_chipselect;
+
ret = cqspi_setup_flash(cqspi);
if (ret) {
dev_err(dev, "failed to setup flash parameters %d\n", ret);
@@ -1396,6 +1411,7 @@ static const struct cqspi_driver_platdata am654_ospi = {
};
static const struct cqspi_driver_platdata intel_lgm_qspi = {
+ .hwcaps_mask = CQSPI_SUPPORTS_MULTI_CHIPSELECT,
.quirks = CQSPI_DISABLE_DAC_MODE,
};
--
2.11.0
next prev parent reply other threads:[~2020-10-30 5:32 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-30 5:31 [PATCH v6 0/6] spi: cadence-quadspi: Add QSPI controller support for Intel LGM SoC Ramuthevar,Vadivel MuruganX
2020-10-30 5:31 ` [PATCH v6 1/6] spi: cadence-quadspi: Add QSPI " Ramuthevar,Vadivel MuruganX
2020-10-30 5:31 ` [PATCH v6 2/6] spi: cadence-quadspi: Disable the DAC " Ramuthevar,Vadivel MuruganX
2020-11-03 16:09 ` Pratyush Yadav
2020-11-04 9:18 ` Ramuthevar, Vadivel MuruganX
2020-10-30 5:31 ` Ramuthevar,Vadivel MuruganX [this message]
2020-11-05 7:11 ` [PATCH v6 3/6] spi: cadence-quadspi: Add multi-chipselect support " Linus Walleij
2020-11-06 4:33 ` Ramuthevar, Vadivel MuruganX
2020-10-30 5:31 ` [PATCH v6 4/6] spi: Move cadence-quadspi.txt to Documentation/devicetree/bindings/spi Ramuthevar,Vadivel MuruganX
2020-10-30 5:31 ` [PATCH v6 5/6] dt-bindings: spi: Convert cadence-quadspi.txt to cadence-quadspi.yaml Ramuthevar,Vadivel MuruganX
2020-10-30 15:18 ` Rob Herring
2020-11-02 5:59 ` Ramuthevar, Vadivel MuruganX
2020-11-04 22:02 ` Rob Herring
2020-11-09 1:40 ` Ramuthevar, Vadivel MuruganX
2020-10-30 5:31 ` [PATCH v6 6/6] dt-bindings: spi: Add compatible for Intel LGM SoC Ramuthevar,Vadivel MuruganX
2020-11-04 22:03 ` Rob Herring
2020-11-09 1:49 ` Ramuthevar, Vadivel MuruganX
2020-11-09 15:15 ` Rob Herring
2020-11-10 5:21 ` Ramuthevar, Vadivel MuruganX
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=20201030053153.5319-4-vadivel.muruganx.ramuthevar@linux.intel.com \
--to=vadivel.muruganx.ramuthevar@linux.intel.com \
--cc=broonie@kernel.org \
--cc=cheol.yong.kim@intel.com \
--cc=devicetree@vger.kernel.org \
--cc=dinguyen@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-spi@vger.kernel.org \
--cc=miquel.raynal@bootlin.com \
--cc=qi-ming.wu@intel.com \
--cc=richard@nod.at \
--cc=robh+dt@kernel.org \
--cc=simon.k.r.goldschmidt@gmail.com \
--cc=tudor.ambarus@microchip.com \
--cc=vigneshr@ti.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.