From: Robin Gong <yibin.gong-3arQi8VN3Tc@public.gmane.org>
To: s.hauer-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org,
vkoul-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
shawnguo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
u.kleine-koenig-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org,
broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
festevam-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org,
mark.rutland-5wv7dgnIgG8@public.gmane.org,
catalin.marinas-5wv7dgnIgG8@public.gmane.org,
will.deacon-5wv7dgnIgG8@public.gmane.org,
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martin.fuzzey-X8SyT9posyX3d/wEbhiU/g@public.gmane.org
Cc: kernel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org,
linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-imx-3arQi8VN3Tc@public.gmane.org,
dmaengine-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH v7 07/13] spi: imx: fix ERR009165
Date: Thu, 12 Mar 2020 00:36:30 +0800 [thread overview]
Message-ID: <1583944596-23410-8-git-send-email-yibin.gong@nxp.com> (raw)
In-Reply-To: <1583944596-23410-1-git-send-email-yibin.gong-3arQi8VN3Tc@public.gmane.org>
Change to XCH mode even in dma mode, please refer to the below
errata:
https://www.nxp.com/docs/en/errata/IMX6DQCE.pdf
Signed-off-by: Robin Gong <yibin.gong-3arQi8VN3Tc@public.gmane.org>
Acked-by: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
---
drivers/spi/spi-imx.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
index f4f28a4..70df8e6 100644
--- a/drivers/spi/spi-imx.c
+++ b/drivers/spi/spi-imx.c
@@ -585,8 +585,8 @@ 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;
- if (spi_imx->usedma)
- ctrl |= MX51_ECSPI_CTRL_SMC;
+ /* ERR009165: work in XHC mode as PIO */
+ ctrl &= ~MX51_ECSPI_CTRL_SMC;
writel(ctrl, spi_imx->base + MX51_ECSPI_CTRL);
@@ -617,7 +617,7 @@ static void mx51_setup_wml(struct spi_imx_data *spi_imx)
* and enable DMA request.
*/
writel(MX51_ECSPI_DMA_RX_WML(spi_imx->wml - 1) |
- MX51_ECSPI_DMA_TX_WML(spi_imx->wml) |
+ MX51_ECSPI_DMA_TX_WML(0) |
MX51_ECSPI_DMA_RXT_WML(spi_imx->wml) |
MX51_ECSPI_DMA_TEDEN | MX51_ECSPI_DMA_RXDEN |
MX51_ECSPI_DMA_RXTDEN, spi_imx->base + MX51_ECSPI_DMA);
@@ -1171,7 +1171,11 @@ static int spi_imx_dma_configure(struct spi_master *master)
tx.direction = DMA_MEM_TO_DEV;
tx.dst_addr = spi_imx->base_phys + MXC_CSPITXDATA;
tx.dst_addr_width = buswidth;
- tx.dst_maxburst = spi_imx->wml;
+ /*
+ * 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;
ret = dmaengine_slave_config(master->dma_tx, &tx);
if (ret) {
dev_err(spi_imx->dev, "TX dma configuration failed with %d\n", ret);
@@ -1265,10 +1269,6 @@ static int spi_imx_sdma_init(struct device *dev, struct spi_imx_data *spi_imx,
{
int ret;
- /* use pio mode for i.mx6dl chip TKT238285 */
- if (of_machine_is_compatible("fsl,imx6dl"))
- return 0;
-
spi_imx->wml = spi_imx->devtype_data->fifo_size / 2;
/* Prepare for TX DMA: */
--
2.7.4
next prev parent reply other threads:[~2020-03-11 16:36 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-11 16:36 [PATCH v7 00/13] add ecspi ERR009165 for i.mx6/7 soc family Robin Gong
2020-03-11 16:36 ` [PATCH v7 08/13] spi: imx: remove ERR009165 workaround on i.mx6ul Robin Gong
[not found] ` <1583944596-23410-1-git-send-email-yibin.gong-3arQi8VN3Tc@public.gmane.org>
2020-03-11 16:36 ` [PATCH v7 01/13] Revert "ARM: dts: imx6q: Use correct SDMA script for SPI5 core" Robin Gong
2020-03-11 16:36 ` [PATCH v7 02/13] Revert "ARM: dts: imx6: Use correct SDMA script for SPI cores" Robin Gong
2020-03-11 16:36 ` [PATCH v7 03/13] Revert "dmaengine: imx-sdma: fix context cache" Robin Gong
2020-03-11 16:36 ` [PATCH v7 04/13] Revert "dmaengine: imx-sdma: refine to load context only once" Robin Gong
2020-03-11 16:36 ` [PATCH v7 05/13] dmaengine: imx-sdma: remove dupilicated sdma_load_context Robin Gong
2020-03-11 16:36 ` [PATCH v7 06/13] dmaengine: imx-sdma: add mcu_2_ecspi script Robin Gong
2020-03-11 16:36 ` Robin Gong [this message]
2020-03-11 16:36 ` [PATCH v7 09/13] spi: imx: add new i.mx6ul compatible name in binding doc Robin Gong
2020-03-11 16:36 ` [PATCH v7 10/13] dmaengine: imx-sdma: remove ERR009165 on i.mx6ul Robin Gong
2020-03-11 16:36 ` [PATCH v7 12/13] dmaengine: imx-sdma: fix ecspi1 rx dma not work on i.mx8mm Robin Gong
2020-03-11 16:36 ` [PATCH v7 11/13] dma: imx-sdma: add i.mx6ul compatible name Robin Gong
2020-03-11 16:36 ` [PATCH v7 13/13] dmaengine: imx-sdma: add uart rom script Robin Gong
2020-04-15 8:41 ` [PATCH v7 00/13] add ecspi ERR009165 for i.mx6/7 soc family Robin Gong
2020-04-15 9:19 ` Mark Brown
2020-04-15 13:57 ` Robin Gong
2020-04-15 9:47 ` Fuzzey, Martin
2020-04-15 14:06 ` Robin Gong
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