From: jiada_wang@mentor.com (Jiada Wang)
To: linux-arm-kernel@lists.infradead.org
Subject: No subject
Date: Mon, 26 Oct 2015 12:21:55 +0900 [thread overview]
Message-ID: <562D9C53.3050603@mentor.com> (raw)
In-Reply-To: <E1ZqY3A-0004Mt-KH@feisty.vs19.net>
Hello
> Subject: [PATCH v2 4/8] spi: imx: add selection for iMX53 and iMX6
controller type
>
> ECSPI contorller for iMX53 and iMX6 has few hardware issues in slave
> mode and (32*n+1) SPI word size handling comparing to iMX51.
> The change add possibility to detect the SPI controller is use and apply
> workarounds/limitations.
> Documentation for device tree bindings updated
>
> Signed-off-by: Anton Bondarenko <anton_bondarenko@mentor.com>
> ---
> .../devicetree/bindings/spi/fsl-imx-cspi.txt | 2 ++
> drivers/spi/spi-imx.c | 36 ++++++++++++++++++++--
> 2 files changed, 35 insertions(+), 3 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt b/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt
> index 523341a..425485f 100644
> --- a/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt
> +++ b/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt
> @@ -9,6 +9,8 @@ Required properties:
> - "fsl,imx31-cspi" for SPI compatible with the one integrated on i.MX31
> - "fsl,imx35-cspi" for SPI compatible with the one integrated on i.MX35
> - "fsl,imx51-ecspi" for SPI compatible with the one integrated on i.MX51
> + - "fsl,imx53-ecspi" for SPI compatible with the one integrated on i.MX53
> + - "fsl,imx6q-ecspi" for SPI compatible with the one integrated on i.MX6 family
> - reg : Offset and length of the register set for the device
> - interrupts : Should contain CSPI/eCSPI interrupt
> - fsl,spi-num-chipselects : Contains the number of the chipselect
> diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
> index d9b730d..41c9cef 100644
> --- a/drivers/spi/spi-imx.c
> +++ b/drivers/spi/spi-imx.c
> @@ -72,7 +72,8 @@ enum spi_imx_devtype {
> IMX27_CSPI,
> IMX31_CSPI,
> IMX35_CSPI, /* CSPI on all i.mx except above */
> - IMX51_ECSPI, /* ECSPI on i.mx51 and later */
> + IMX51_ECSPI, /* ECSPI on i.mx51 */
> + IMX53_ECSPI, /* ECSPI on i.mx53 and later */
> };
>
> struct spi_imx_data;
> @@ -129,9 +130,20 @@ static inline int is_imx35_cspi(struct spi_imx_data *d)
> return d->devtype_data->devtype == IMX35_CSPI;
> }
>
> +static inline int is_imx53_ecspi(struct spi_imx_data *d)
> +{
> + return d->devtype_data->devtype == IMX53_ECSPI;
> +}
> +
> +static inline int is_imx5x_ecspi(struct spi_imx_data *d)
> +{
> + return d->devtype_data->devtype == IMX51_ECSPI ||
> + d->devtype_data->devtype == IMX53_ECSPI;
> +}
> +
> static inline unsigned spi_imx_get_fifosize(struct spi_imx_data *d)
> {
> - return (d->devtype_data->devtype == IMX51_ECSPI) ? 64 : 8;
> + return is_imx5x_ecspi(d) ? 64 : 8;
> }
>
> #define MXC_SPI_BUF_RX(type) \
> @@ -680,6 +692,16 @@ static struct spi_imx_devtype_data imx51_ecspi_devtype_data = {
> .devtype = IMX51_ECSPI,
> };
>
> +static struct spi_imx_devtype_data imx53_ecspi_devtype_data = {
> + /* i.mx53 and later ecspi shares the functions with i.mx51 one */
> + .intctrl = mx51_ecspi_intctrl,
> + .config = mx51_ecspi_config,
> + .trigger = mx51_ecspi_trigger,
> + .rx_available = mx51_ecspi_rx_available,
> + .reset = mx51_ecspi_reset,
> + .devtype = IMX53_ECSPI,
> +};
> +
> static const struct platform_device_id spi_imx_devtype[] = {
> {
> .name = "imx1-cspi",
> @@ -697,6 +719,12 @@ static const struct platform_device_id spi_imx_devtype[] = {
> .name = "imx35-cspi",
> .driver_data = (kernel_ulong_t) &imx35_cspi_devtype_data,
> }, {
> + .name = "imx53-ecspi",
> + .driver_data = (kernel_ulong_t)&imx53_ecspi_devtype_data,
> + }, {
> + .name = "imx6q-ecspi",
> + .driver_data = (kernel_ulong_t)&imx53_ecspi_devtype_data,
> + }, {
> .name = "imx51-ecspi",
> .driver_data = (kernel_ulong_t) &imx51_ecspi_devtype_data,
> }, {
> @@ -710,6 +738,8 @@ static const struct of_device_id spi_imx_dt_ids[] = {
> { .compatible = "fsl,imx27-cspi", .data = &imx27_cspi_devtype_data, },
> { .compatible = "fsl,imx31-cspi", .data = &imx31_cspi_devtype_data, },
> { .compatible = "fsl,imx35-cspi", .data = &imx35_cspi_devtype_data, },
> + { .compatible = "fsl,imx53-ecspi", .data = &imx53_ecspi_devtype_data, },
> + { .compatible = "fsl,imx6q-ecspi", .data = &imx53_ecspi_devtype_data, },
> { .compatible = "fsl,imx51-ecspi", .data = &imx51_ecspi_devtype_data, },
> { /* sentinel */ }
> };
> @@ -1299,7 +1329,7 @@ static int spi_imx_probe(struct platform_device *pdev)
> * Only validated on i.mx6 now, can remove the constrain if validated on
> * other chips.
> */
> - if (spi_imx->devtype_data == &imx51_ecspi_devtype_data &&
> + if (is_imx5x_ecspi(spi_imx) &&
> spi_imx_sdma_init(&pdev->dev, spi_imx, master))
> dev_err(&pdev->dev, "dma setup error,use pio instead\n");
>
>
With this patch, there will still be issues with SPI controller on imx6
soc other than imx6q,
for example SPI controller on imx6sl has compatibility
"compatible = "fsl,imx6sl-ecspi", "fsl,imx51-ecspi";"
So I would suggest to update device-tree file,
for example
imx53.dtsi
"fsl,imx53-ecspi", "fsl,imx51-ecspi"; -> "fsl,imx53-ecspi";
imx6qdl.dtsi
compatible = "fsl,imx6q-ecspi", "fsl,imx51-ecspi"; -> compatible =
"fsl,imx6q-ecspi", "fsl,imx53-ecspi";
imx6sl.dtsi
compatible = "fsl,imx6sl-ecspi", "fsl,imx51-ecspi"; -> compatible =
"fsl,imx6sl-ecspi", "fsl,imx53-ecspi";
etc...
by doing this, then only compatible string "fsl,imx53-ecspi" need to be
added in driver code.
Thanks,
Jiada
next parent reply other threads:[~2015-10-26 3:21 UTC|newest]
Thread overview: 89+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <E1ZqY3A-0004Mt-KH@feisty.vs19.net>
2015-10-26 3:21 ` Jiada Wang [this message]
2015-10-26 3:26 ` [PATCH v2 4/8] spi: imx: add selection for iMX53 and iMX6 controller type Jiada Wang
2018-07-06 21:16 No subject Santosh Shilimkar
2018-07-06 21:16 ` Santosh Shilimkar
2018-07-06 21:16 ` Santosh Shilimkar
2018-07-06 21:18 ` Santosh Shilimkar
-- strict thread matches above, loose matches on Subject: below --
2018-06-23 21:08 David Lechner
2018-05-04 20:06 Bjorn Helgaas
2018-04-20 8:02 Christoph Hellwig
2018-04-16 1:22 Andrew Worsley
2017-11-30 10:25 Mary Cuevas
2017-08-22 1:38 Nicholas Piggin
2017-06-26 13:16 [PATCH] arm64: use readq() instead of readl() to read 64bit entry_point Luc Van Oostenryck
2017-07-03 23:46 ` No subject Khuong Dinh
2017-06-04 11:59 Yury Norov
[not found] <CAMj-D2DO_CfvD77izsGfggoKP45HSC9aD6auUPAYC9Yeq_aX7w@mail.gmail.com>
2017-05-04 16:44 ` gengdongjiu
2017-01-31 7:58 Andy Gross
2016-12-01 10:00 Ramana Radhakrishnan
2016-11-11 3:38 Chunyan Zhang
2016-09-30 14:37 Maxime Ripard
2016-07-10 9:24 Neil Armstrong
2016-04-22 8:25 Daniel Lezcano
2016-04-22 8:27 ` Daniel Lezcano
2016-04-11 7:51 Paul Walmsley
2015-12-13 21:57 何旦洁
2015-10-27 0:44 xuyiping
2015-09-01 14:14 Mika Penttilä
2015-09-01 15:22 ` Fabio Estevam
2015-07-22 14:05 Chunfeng Yun
2015-07-15 9:32 Yuan Yao
2015-05-18 20:00 raghu MG
2015-04-21 10:18 Ard Biesheuvel
2015-02-26 16:56 Jorge Ramirez-Ortiz
2015-02-18 16:14 Lee Jones
2014-10-28 14:13 Mark Rutland
2014-09-22 19:41 Santosh Shilimkar
2014-09-22 7:45 Jingchang Lu
2014-07-09 17:49 Sebastian Andrzej Siewior
2014-05-24 1:21 Loc Ho
2014-05-12 16:40 Santosh Shilimkar
2014-05-12 16:38 Santosh Shilimkar
2014-02-22 15:53 Hans de Goede
2014-01-21 4:09 John Tobias
2014-01-16 16:11 Loc Ho
2014-01-16 16:09 Loc Ho
2014-01-13 10:32 Lothar Waßmann
2014-01-13 10:29 Lothar Waßmann
2013-12-12 7:30 Loc Ho
2013-11-01 7:04 Xiubo Li
2013-09-24 3:13 Rohit Vaswani
2013-09-02 17:01 Drasko DRASKOVIC
2013-08-24 9:29 Haojian Zhuang
2013-07-26 10:05 Haojian Zhuang
2013-06-28 5:49 Wang, Yalin
2013-06-19 10:57 Ben Dooks
2013-04-24 18:07 Viral Mehta
2012-12-29 9:17 steve.zhan
2012-11-11 14:16 Sammy Chan
2012-11-08 8:07 Abhimanyu Kapur
2012-10-14 10:05 Alexey Dobriyan
2012-08-27 6:40 Simon Horman
2012-06-21 18:26 Paul Walmsley
2012-06-06 10:33 Sascha Hauer
2012-05-18 12:27 Sascha Hauer
2012-03-20 18:28 John Szakmeister
2011-12-28 14:01 Shawn Guo
2011-12-02 16:01 Will Deacon
2011-11-28 2:35 Jett.Zhou
2011-09-19 1:45 Saleem Abdulrasool
2011-09-15 2:03 Jongpill Lee
2011-07-21 11:12 Padmavathi Venna
2011-06-27 20:47 John Ogness
2011-06-27 20:47 Jongpill Lee
2011-06-13 17:29 Andre Silva
2011-06-05 18:33 Hector Oron
2011-05-17 9:28 Javier Martin
2011-05-13 19:35 Vadim Bendebury
2011-03-01 14:02 Javier Martin
2011-01-13 9:13 Uwe Kleine-König
2010-12-03 1:08 tarek attia
2010-10-08 6:02 Daein Moon
2010-09-09 3:33 tarek attia
2010-06-24 13:48 Uwe Kleine-König
2010-06-07 17:58 Dave Hylands
2010-05-18 10:38 Marek Szyprowski
2010-04-17 21:43 nelakurthi koteswararao
2010-02-25 9:36 Thomas Weber
2009-09-17 9:37 Marc Kleine-Budde
2009-09-07 14:07 Somshekar ChandrashekarKadam
2009-08-25 10:34 Syed Rafiuddin
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