-----Original Message----- From: Jagan Teki jagan@amarulasolutions.com Sent: 2019年5月23日 12:38 To: Prabhakar Kushwaha prabhakar.kushwaha@nxp.com Cc: Chuanhua Han chuanhua.han@nxp.com; U-Boot-Denx u-boot@lists.denx.de; Jiafei Pan jiafei.pan@nxp.com; Jagan Teki jagan@openedev.com; Yinbo Zhu yinbo.zhu@nxp.com; Ruchika Gupta ruchika.gupta@nxp.com; Xiaobo Xie xiaobo.xie@nxp.com; Rajan Srivastava rajan.srivastava@nxp.com Subject: Re: [U-Boot] [EXT] Re: [PATCH 2/5] dm: spi: Convert Freescale ESPI driver to driver model
Caution: EXT Email
On Wed, May 22, 2019 at 10:23 PM Prabhakar Kushwaha prabhakar.kushwaha@nxp.com wrote:
Dear Chuanhua, Jagan,
-----Original Message----- From: U-Boot u-boot-bounces@lists.denx.de On Behalf Of Chuanhua Han Sent: Thursday, May 9, 2019 9:03 AM To: Jagan Teki jagan@amarulasolutions.com Cc: U-Boot-Denx u-boot@lists.denx.de; Jiafei Pan jiafei.pan@nxp.com; Jagan Teki jagan@openedev.com; Yinbo Zhu yinbo.zhu@nxp.com; Ruchika Gupta ruchika.gupta@nxp.com Subject: Re: [U-Boot] [EXT] Re: [PATCH 2/5] dm: spi: Convert Freescale ESPI driver to driver model
-----Original Message----- From: Jagan Teki jagan@amarulasolutions.com Sent: 2019年5月6日 15:03 To: Chuanhua Han chuanhua.han@nxp.com Cc: Jagan Teki jagan@openedev.com; Wolfgang Denk wd@denx.de; Shengzhou Liu shengzhou.liu@nxp.com; Ruchika Gupta ruchika.gupta@nxp.com; U-Boot-Denx u-boot@lists.denx.de; Jiafei Pan jiafei.pan@nxp.com; Yinbo Zhu yinbo.zhu@nxp.com Subject: Re: [EXT] Re: [U-Boot] [PATCH 2/5] dm: spi: Convert Freescale ESPI driver to driver model
Caution: EXT Email
On Mon, May 6, 2019 at 12:29 PM Chuanhua Han chuanhua.han@nxp.com wrote:
-----Original Message----- From: Jagan Teki jagan@amarulasolutions.com Sent: 2019年4月26日 2:07 To: Chuanhua Han chuanhua.han@nxp.com Cc: Jagan Teki jagan@openedev.com; Wolfgang Denk wd@denx.de; Shengzhou Liu shengzhou.liu@nxp.com; Ruchika Gupta ruchika.gupta@nxp.com; U-Boot-Denx u-boot@lists.denx.de; Jiafei Pan jiafei.pan@nxp.com; Yinbo Zhu yinbo.zhu@nxp.com Subject: Re: [EXT] Re: [U-Boot] [PATCH 2/5] dm: spi: Convert Freescale ESPI driver to driver model
Caution: EXT Email
On Thu, Apr 25, 2019 at 8:27 AM Chuanhua Han
wrote: > > Hi,jagan > Thank you for your replay! > > > -----Original Message----- > > From: Jagan Teki jagan@amarulasolutions.com > > Sent: 2019年4月24日 14:57 > > To: Chuanhua Han chuanhua.han@nxp.com > > Cc: Jagan Teki jagan@openedev.com; Wolfgang Denk > > wd@denx.de; Shengzhou Liu shengzhou.liu@nxp.com; > > Ruchika Gupta ruchika.gupta@nxp.com; U-Boot-Denx > > u-boot@lists.denx.de; Jiafei Pan jiafei.pan@nxp.com; > > Yinbo Zhu yinbo.zhu@nxp.com > > Subject: [EXT] Re: [U-Boot] [PATCH 2/5] dm: spi: Convert > > Freescale ESPI driver to driver model > > > > WARNING: This email was created outside of NXP. DO NOT > > CLICK links or attachments unless you recognize the sender > > and know the content is safe. > > > > > > > > On Tue, Apr 23, 2019 at 4:17 PM Chuanhua Han chuanhua.han@nxp.com > > wrote: > > > > > > Modify the Freescale ESPI driver to support the driver model. > > > Also resolved the following problems: > > > > > > ===================== WARNING ====================== > > > This board > > does > > > not use CONFIG_DM_SPI. Please update the board before > > > v2019.04 for no dm conversion and v2019.07 for partially > > > dm
converted drivers.
> > > Failure to update can lead to driver/board removal See > > > doc/driver-model/MIGRATION.txt for more info. > > > ==================================================== > > > ===================== WARNING ====================== > > > This board > > does > > > not use CONFIG_DM_SPI_FLASH. Please update the board to > > > use CONFIG_SPI_FLASH before the v2019.07 release. > > > Failure to update by the deadline may result in board removal. > > > See doc/driver-model/MIGRATION.txt for more info. > > > ==================================================== > > > > > > Signed-off-by: Chuanhua Han chuanhua.han@nxp.com > > > --- > > > depends on: > > > - > > > https://eur01.safelinks.protection.outlook.com/?url=http > > > s%3A > > > %2 > > > F%2F > > > patc > > > > >
hwork.ozlabs.org%2Fproject%2Fuboot%2Flist%2F%3Fseries%3D99439&
d
> > ata > > > > >
=02%7C01%7Cchuanhua.han%40nxp.com%7Cfa6bdd7859c4411b5d8608d6c8
> > 8223e3%7 > > > > >
C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C1%7C63691685860819371
> > 5&sda > > > > >
ta=437CqPexTmJAzhl7wZ3lAUQVbmy%2B2NvHlurTcGTJKT0%3D&reserve
> > d=0 > > > > > > drivers/spi/fsl_espi.c | 450 > > > +++++++++++++++++++++++++++++------------ > > > 1 file changed, 316 insertions(+), 134 deletions(-) > > > > > > diff --git a/drivers/spi/fsl_espi.c > > > b/drivers/spi/fsl_espi.c index 7444ae1a06..6ebe57c30b > > > 100644 > > > --- a/drivers/spi/fsl_espi.c > > > +++ b/drivers/spi/fsl_espi.c > > > @@ -4,17 +4,27 @@ > > > * > > > * Copyright 2010-2011 Freescale Semiconductor, Inc. > > > * Author: Mingkai Hu (Mingkai.hu@freescale.com) > > > + * Chuanhua Han (chuanhua.han@nxp.com) > > > */ > > > > > > #include <common.h> > > > - > > > #include <malloc.h> > > > #include <spi.h> > > > #include <asm/immap_85xx.h> > > > +#include <dm.h> > > > +#include <errno.h> > > > +#include <fdtdec.h> > > > + > > > +struct fsl_espi_platdata { > > > + uint flags; > > > + uint speed_hz; > > > + uint num_chipselect; > > > + fdt_addr_t regs_addr; }; > > > > > > -struct fsl_spi_slave { > > > - struct spi_slave slave; > > > +struct fsl_espi_priv { > > > ccsr_espi_t *espi; > > > + u32 speed_hz; > > > unsigned int div16; > > > unsigned int pm; > > > int tx_timeout; > > > @@ -25,9 +35,18 @@ struct fsl_spi_slave { > > > unsigned int max_transfer_length; > > > }; > > > > > > +struct fsl_spi_slave { > > > + struct spi_slave slave; > > > + struct fsl_espi_priv priv; }; > > > + > > > #define to_fsl_spi_slave(s) container_of(s, struct > > > fsl_spi_slave, > > > slave) > > > +#define to_fsl_spi_priv(p) container_of(p, struct > > > +fsl_spi_slave, > > > +priv) > > > #define US_PER_SECOND 1000000UL > > > > > > +/* default SCK frequency, unit: HZ */ > > > +#define FSL_ESPI_DEFAULT_SCK_FREQ 10000000 > > > + > > > #define ESPI_MAX_CS_NUM 4 > > > #define ESPI_FIFO_WIDTH_BIT 32 > > > > > > @@ -62,121 +81,46 @@ struct fsl_spi_slave { > > > > > > #define ESPI_MAX_DATA_TRANSFER_LEN 0xFFF0 > > > > > > -struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int
cs,
> > > - unsigned int max_hz, unsigned int mode) > > > -{ > > > - struct fsl_spi_slave *fsl; > > > - sys_info_t sysinfo; > > > - unsigned long spibrg = 0; > > > - unsigned long spi_freq = 0; > > > - unsigned char pm = 0; > > > - > > > - if (!spi_cs_is_valid(bus, cs)) > > > - return NULL; > > > - > > > - fsl = spi_alloc_slave(struct fsl_spi_slave, bus, cs); > > > - if (!fsl) > > > - return NULL; > > > - > > > - fsl->espi = (void *)(CONFIG_SYS_MPC85xx_ESPI_ADDR); > > > - fsl->mode = mode; > > > - fsl->max_transfer_length =
ESPI_MAX_DATA_TRANSFER_LEN;
> > > - > > > - /* Set eSPI BRG clock source */ > > > - get_sys_info(&sysinfo); > > > - spibrg = sysinfo.freq_systembus / 2; > > > - fsl->div16 = 0; > > > - if ((spibrg / max_hz) > 32) { > > > - fsl->div16 = ESPI_CSMODE_DIV16; > > > - pm = spibrg / (max_hz * 16 * 2); > > > - if (pm > 16) { > > > - pm = 16; > > > - debug("Requested speed is too
low: %d
Hz, %ld > > Hz " > > > - "is used.\n", max_hz, spibrg
/ (32
16)); > > > - } > > > - } else > > > - pm = spibrg / (max_hz * 2); > > > - if (pm) > > > - pm--; > > > - fsl->pm = pm; > > > - > > > - if (fsl->div16) > > > - spi_freq = spibrg / ((pm + 1) * 2 * 16); > > > - else > > > - spi_freq = spibrg / ((pm + 1) * 2); > > > - > > > - /* set tx_timeout to 10 times of one espi FIFO entry go
out
*/
> > > - fsl->tx_timeout = DIV_ROUND_UP((US_PER_SECOND * > > ESPI_FIFO_WIDTH_BIT > > > - * 10), spi_freq); > > > - > > > - return &fsl->slave; > > > -} > > > - > > > -void spi_free_slave(struct spi_slave *slave) > > > +#ifndef CONFIG_DM_SPI > > > > Would you try for full dm-conversion? it would be hard to > > move all respective defconfigs to use but better try since > > we have next version deadline for full dm-conversion. thanks! > Currently my espi driver is modified to be compatible with > dm configuration and non-dm configuration. > If uboot don't need non-dm code in the future, I will remove > this compatibility and only keep the dm driver code. Thank you.
Idea is to make fully dm supported and ie what we have migration deadline, doc/driver-model/MIGRATION.txt
Do you mean that I need to delete the original non-dm code? Or there are some values in the dm code that do not come from dts! Can you tell me something about it? Thank you!
If not dt, can be done via platdata, we have few drivers with similar support drivers/spi/pl022_spi.c
I am trying to break dead-lock here.
Request from Jagan i.e. convert this driver in full DM model. Remove
non-dm compatibility.
Considering most of the NXP's PowerPC platforms are not supported device
tree.
A middle path will be platdata similar to drivers/spi/pl022_spi.c.
platdata is straightforward, we have a driver that supported. only concern I can see here, the boards which are using this driver would have dm, of_control or platdata if they want to use fully converted fsl_espi.c
Ok, I will do a full dm conversion in June.