From: Tudor Ambarus <tudor.ambarus@linaro.org>
To: broonie@kernel.org, andi.shyti@kernel.org, semen.protsenko@linaro.org
Cc: krzysztof.kozlowski@linaro.org, alim.akhtar@samsung.com,
linux-spi@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, andre.draszik@linaro.org,
peter.griffin@linaro.org, kernel-team@android.com,
willmcvicker@google.com, robh+dt@kernel.org, conor+dt@kernel.org,
devicetree@vger.kernel.org,
Tudor Ambarus <tudor.ambarus@linaro.org>
Subject: [PATCH 4/4] spi: s3c64xx: add support for google,gs101-spi
Date: Tue, 6 Feb 2024 08:52:38 +0000 [thread overview]
Message-ID: <20240206085238.1208256-5-tudor.ambarus@linaro.org> (raw)
In-Reply-To: <20240206085238.1208256-1-tudor.ambarus@linaro.org>
Add support for GS101 SPI. GS101 integrates 16 SPI nodes, all with 64
bytes FIFOs. GS101 allows just 32 bit register accesses, otherwise a
Serror Interrupt is raised. Do the write reg accesses in 32 bits.
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
---
drivers/spi/spi-s3c64xx.c | 18 +++++++++++++++++-
1 file changed, 17 insertions(+), 1 deletion(-)
diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index cb45ad615f3d..9ad0d513fb30 100644
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -19,7 +19,7 @@
#include <linux/spi/spi.h>
#include <linux/types.h>
-#define MAX_SPI_PORTS 12
+#define MAX_SPI_PORTS 16
#define S3C64XX_SPI_QUIRK_CS_AUTO (1 << 1)
#define AUTOSUSPEND_TIMEOUT 2000
@@ -1538,6 +1538,19 @@ static const struct s3c64xx_spi_port_config fsd_spi_port_config = {
.quirks = S3C64XX_SPI_QUIRK_CS_AUTO,
};
+static const struct s3c64xx_spi_port_config gs101_spi_port_config = {
+ .fifo_lvl_mask = { 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f,
+ 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f},
+ .rx_lvl_offset = 15,
+ .tx_st_done = 25,
+ .clk_div = 4,
+ .high_speed = true,
+ .clk_from_cmu = true,
+ .has_loopback = true,
+ .use_32bit_io = true,
+ .quirks = S3C64XX_SPI_QUIRK_CS_AUTO,
+};
+
static const struct platform_device_id s3c64xx_spi_driver_ids[] = {
{
.name = "s3c2443-spi",
@@ -1550,6 +1563,9 @@ static const struct platform_device_id s3c64xx_spi_driver_ids[] = {
};
static const struct of_device_id s3c64xx_spi_dt_match[] = {
+ { .compatible = "google,gs101-spi",
+ .data = &gs101_spi_port_config,
+ },
{ .compatible = "samsung,s3c2443-spi",
.data = &s3c2443_spi_port_config,
},
--
2.43.0.594.gd9cf4e227d-goog
next prev parent reply other threads:[~2024-02-06 8:52 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-06 8:52 [PATCH 0/4] spi: s3c64xx: add support for google,gs101-spi Tudor Ambarus
2024-02-06 8:52 ` [PATCH 1/4] spi: s3c64xx: explicitly include <linux/types.h> Tudor Ambarus
2024-02-06 9:56 ` Peter Griffin
2024-02-06 18:02 ` Sam Protsenko
2024-02-07 6:20 ` Tudor Ambarus
2024-02-07 9:58 ` Greg Kroah-Hartman
2024-02-07 10:14 ` Tudor Ambarus
2024-02-07 15:42 ` Sam Protsenko
2024-02-07 16:07 ` Mark Brown
2024-02-06 8:52 ` [PATCH 2/4] spi: dt-bindings: samsung: add google,gs101-spi compatible Tudor Ambarus
2024-02-06 9:57 ` Peter Griffin
2024-02-06 8:52 ` [PATCH 3/4] spi: s3c64xx: add s3c64xx_iowrite{8,16}_32_rep accessors Tudor Ambarus
2024-02-06 18:44 ` Sam Protsenko
2024-02-07 7:04 ` Tudor Ambarus
2024-02-06 8:52 ` Tudor Ambarus [this message]
2024-02-06 10:12 ` [PATCH 4/4] spi: s3c64xx: add support for google,gs101-spi Peter Griffin
2024-02-06 11:04 ` Mark Brown
2024-02-06 11:19 ` Tudor Ambarus
2024-02-06 12:00 ` Peter Griffin
2024-02-06 18:51 ` Sam Protsenko
2024-02-06 18:59 ` [PATCH 0/4] " Sam Protsenko
2024-02-07 7:50 ` Tudor Ambarus
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