From: yibin.gong@nxp.com
To: robh+dt@kernel.org, mark.rutland@arm.com, shawnguo@kernel.org,
s.hauer@pengutronix.de, kernel@pengutronix.de,
broonie@kernel.org, festevam@gmail.com, vkoul@kernel.org,
dan.j.williams@intel.com, u.kleine-koenig@pengutronix.de,
catalin.marinas@arm.com, l.stach@pengutronix.de,
will.deacon@arm.com
Cc: linux-spi@vger.kernel.org, linux-imx@nxp.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org,
devicetree@vger.kernel.org
Subject: [PATCH v5 07/15] spi: imx: remove ERR009165 workaround on i.mx6ul
Date: Mon, 10 Jun 2019 16:17:45 +0800 [thread overview]
Message-ID: <20190610081753.11422-8-yibin.gong@nxp.com> (raw)
In-Reply-To: <20190610081753.11422-1-yibin.gong@nxp.com>
From: Robin Gong <yibin.gong@nxp.com>
ERR009165 fixed on i.mx6ul/6ull/6sll. All other i.mx6/7 and
i.mx8m/8mm still need this errata. Please refer to nxp official
errata document from https://www.nxp.com/ .
For removing workaround on those chips. Add new i.mx6ul type.
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Acked-by: Mark Brown <broonie@kernel.org>
---
drivers/spi/spi-imx.c | 50 +++++++++++++++++++++++++++++++++++++++++++++-----
1 file changed, 45 insertions(+), 5 deletions(-)
diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
index 6795910..91660dc 100644
--- a/drivers/spi/spi-imx.c
+++ b/drivers/spi/spi-imx.c
@@ -57,6 +57,7 @@ enum spi_imx_devtype {
IMX35_CSPI, /* CSPI on all i.mx except above */
IMX51_ECSPI, /* ECSPI on i.mx51 */
IMX53_ECSPI, /* ECSPI on i.mx53 and later */
+ IMX6UL_ECSPI, /* ERR009165 fix from i.mx6ul */
};
struct spi_imx_data;
@@ -75,6 +76,11 @@ struct spi_imx_devtype_data {
bool has_slavemode;
unsigned int fifo_size;
bool dynamic_burst;
+ /*
+ * ERR009165 fixed or not:
+ * https://www.nxp.com/docs/en/errata/IMX6DQCE.pdf
+ */
+ bool tx_glitch_fixed;
enum spi_imx_devtype devtype;
};
@@ -128,7 +134,8 @@ static inline int is_imx35_cspi(struct spi_imx_data *d)
static inline int is_imx51_ecspi(struct spi_imx_data *d)
{
- return d->devtype_data->devtype == IMX51_ECSPI;
+ return d->devtype_data->devtype == IMX51_ECSPI ||
+ d->devtype_data->devtype == IMX6UL_ECSPI;
}
static inline int is_imx53_ecspi(struct spi_imx_data *d)
@@ -585,9 +592,16 @@ static int mx51_ecspi_prepare_transfer(struct spi_imx_data *spi_imx,
ctrl |= mx51_ecspi_clkdiv(spi_imx, t->speed_hz, &clk);
spi_imx->spi_bus_clk = clk;
- /* ERR009165: work in XHC mode as PIO */
- if (spi_imx->usedma)
- ctrl &= ~MX51_ECSPI_CTRL_SMC;
+ /*
+ * ERR009165: work in XHC mode instead of SMC as PIO on the chips
+ * before i.mx6ul.
+ */
+ if (spi_imx->usedma) {
+ if (spi_imx->devtype_data->tx_glitch_fixed)
+ ctrl |= MX51_ECSPI_CTRL_SMC;
+ else
+ ctrl &= ~MX51_ECSPI_CTRL_SMC;
+ }
writel(ctrl, spi_imx->base + MX51_ECSPI_CTRL);
@@ -615,6 +629,8 @@ static void mx51_setup_wml(struct spi_imx_data *spi_imx)
{
u32 tx_wml = 0;
+ if (spi_imx->devtype_data->tx_glitch_fixed)
+ tx_wml = spi_imx->wml;
/*
* Configure the DMA register: setup the watermark
* and enable DMA request.
@@ -1012,6 +1028,23 @@ static struct spi_imx_devtype_data imx53_ecspi_devtype_data = {
.devtype = IMX53_ECSPI,
};
+static struct spi_imx_devtype_data imx6ul_ecspi_devtype_data = {
+ .intctrl = mx51_ecspi_intctrl,
+ .prepare_message = mx51_ecspi_prepare_message,
+ .prepare_transfer = mx51_ecspi_prepare_transfer,
+ .trigger = mx51_ecspi_trigger,
+ .rx_available = mx51_ecspi_rx_available,
+ .reset = mx51_ecspi_reset,
+ .setup_wml = mx51_setup_wml,
+ .fifo_size = 64,
+ .has_dmamode = true,
+ .dynamic_burst = true,
+ .has_slavemode = true,
+ .tx_glitch_fixed = true,
+ .disable = mx51_ecspi_disable,
+ .devtype = IMX6UL_ECSPI,
+};
+
static const struct platform_device_id spi_imx_devtype[] = {
{
.name = "imx1-cspi",
@@ -1035,6 +1068,9 @@ static const struct platform_device_id spi_imx_devtype[] = {
.name = "imx53-ecspi",
.driver_data = (kernel_ulong_t) &imx53_ecspi_devtype_data,
}, {
+ .name = "imx6ul-ecspi",
+ .driver_data = (kernel_ulong_t) &imx6ul_ecspi_devtype_data,
+ }, {
/* sentinel */
}
};
@@ -1047,6 +1083,7 @@ static const struct of_device_id spi_imx_dt_ids[] = {
{ .compatible = "fsl,imx35-cspi", .data = &imx35_cspi_devtype_data, },
{ .compatible = "fsl,imx51-ecspi", .data = &imx51_ecspi_devtype_data, },
{ .compatible = "fsl,imx53-ecspi", .data = &imx53_ecspi_devtype_data, },
+ { .compatible = "fsl,imx6ul-ecspi", .data = &imx6ul_ecspi_devtype_data, },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, spi_imx_dt_ids);
@@ -1178,7 +1215,10 @@ static int spi_imx_dma_configure(struct spi_master *master)
* For ERR009165 with tx_wml = 0 could enlarge burst size to fifo size
* to speed up fifo filling as possible.
*/
- tx.dst_maxburst = spi_imx->devtype_data->fifo_size;
+ if (spi_imx->devtype_data->tx_glitch_fixed)
+ tx.dst_maxburst = spi_imx->wml;
+ else
+ tx.dst_maxburst = spi_imx->devtype_data->fifo_size;
ret = dmaengine_slave_config(master->dma_tx, &tx);
if (ret) {
dev_err(spi_imx->dev, "TX dma configuration failed with %d\n", ret);
--
2.7.4
next prev parent reply other threads:[~2019-06-10 8:17 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-10 8:17 [PATCH v5 00/15] add ecspi ERR009165 for i.mx6/7 soc family yibin.gong
2019-06-10 8:17 ` [PATCH v5 01/15] Revert "ARM: dts: imx6q: Use correct SDMA script for SPI5 core" yibin.gong
2019-06-10 8:17 ` [PATCH v5 02/15] Revert "ARM: dts: imx6: Use correct SDMA script for SPI cores" yibin.gong
2019-06-10 8:17 ` [PATCH v5 03/15] Revert "dmaengine: imx-sdma: refine to load context only once" yibin.gong
2019-06-10 8:17 ` [PATCH v5 04/15] dmaengine: imx-sdma: remove dupilicated sdma_load_context yibin.gong
2019-06-10 8:17 ` [PATCH v5 05/15] dmaengine: imx-sdma: add mcu_2_ecspi script yibin.gong
2019-06-10 8:17 ` [PATCH v5 06/15] spi: imx: fix ERR009165 yibin.gong
2019-06-10 8:17 ` yibin.gong [this message]
2019-06-10 8:17 ` [PATCH v5 08/15] spi: imx: add new i.mx6ul compatible name in binding doc yibin.gong
2019-07-09 2:17 ` Rob Herring
2019-06-10 8:17 ` [PATCH v5 09/15] dmaengine: imx-sdma: remove ERR009165 on i.mx6ul yibin.gong
2019-06-10 8:17 ` [PATCH v5 10/15] dma: imx-sdma: add i.mx6ul/6sx compatible name yibin.gong
2019-06-11 22:35 ` Rob Herring
2019-06-12 2:32 ` Robin Gong
2019-06-10 8:17 ` [PATCH v5 11/15] dmaengine: imx-sdma: fix ecspi1 rx dma not work on i.mx8mm yibin.gong
2019-09-24 13:27 ` Schrempf Frieder
2019-09-25 11:26 ` Robin Gong
2019-09-25 14:53 ` Schrempf Frieder
2019-09-27 1:55 ` Robin Gong
2020-02-06 10:17 ` Schrempf Frieder
2020-02-10 12:28 ` Robin Gong
2019-06-10 8:17 ` [PATCH v5 12/15] ARM: dts: imx6ul: add dma support on ecspi yibin.gong
2019-07-17 6:42 ` Shawn Guo
2019-07-23 9:39 ` Robin Gong
2019-07-24 0:48 ` Shawn Guo
2019-07-24 1:53 ` Robin Gong
2019-09-24 9:53 ` Robin Gong
2019-06-10 8:17 ` [PATCH v5 13/15] ARM: dts: imx6sll: correct sdma compatible yibin.gong
2019-07-17 6:42 ` Shawn Guo
2019-06-10 8:17 ` [PATCH v5 14/15] arm64: defconfig: Enable SDMA on i.mx8mq/8mm yibin.gong
2019-07-17 6:48 ` Shawn Guo
2019-06-10 8:17 ` [PATCH v5 15/15] dmaengine: imx-sdma: add uart rom script yibin.gong
2019-06-10 12:55 ` Vinod Koul
2019-06-11 3:04 ` Robin Gong
2019-06-11 4:37 ` Vinod Koul
2019-06-21 8:42 ` [PATCH v5 00/15] add ecspi ERR009165 for i.mx6/7 soc family Robin Gong
2019-06-24 0:16 ` Shawn Guo
2019-06-25 8:05 ` Robin Gong
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