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
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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=https%3A%2F%2Fpatc
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, %ldHz "
"is used.\n", max_hz, spibrg / (32 * 16));}} elsepm = spibrg / (max_hz * 2);if (pm)pm--;fsl->pm = pm;if (fsl->div16)spi_freq = spibrg / ((pm + 1) * 2 * 16);elsespi_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.