* [PATCH v8 0/2] Add spi-nor flash device pm support @ 2017-08-22 20:45 Kamal Dasu 2017-08-22 20:45 ` [PATCH v8 1/2] mtd: spi-nor: add spi_nor_init() function Kamal Dasu 2017-08-22 20:45 ` [PATCH v8 2/2] mtd: spi-nor: Add spi-nor mtd resume handler Kamal Dasu 0 siblings, 2 replies; 6+ messages in thread From: Kamal Dasu @ 2017-08-22 20:45 UTC (permalink / raw) To: cyrille.pitchen, marek.vasut Cc: computersforpeace, boris.brezillon, richard, linux-mtd, linux-kernel, f.fainelli, bcm-kernel-feedback-list, Kamal Dasu Changes since v7 spi-nor.h - Fix comment style spi-nor.c - Fix condition check to set_4byte() when nor->addr_width == 4 in spi_nor_init() - Bring back quad_enable logic to spi_nor_setup() and remove it from spi_nor_scan() - Remove duplicate comment section in spi_nor_scan() - Leave dev_info() string as before in spi_nor_scan() The V8 changes below implements power management support using the mtd handlers for resume in the spi-nor driver. spi-nor mtd pm resume() calls newly implemented spi_nor_init() function that sets up the spi-nor flash to its pre-suspend/power-on probed state. This is needed S2/S3 PM on platfroms that turn off power to the spi-nor flash on pm suspend. Kamal Dasu (2): mtd: spi-nor: add spi_nor_init() function mtd: spi-nor: Add spi-nor mtd resume handler drivers/mtd/spi-nor/spi-nor.c | 68 +++++++++++++++++++++++++++++++------------ include/linux/mtd/spi-nor.h | 10 +++++++ 2 files changed, 60 insertions(+), 18 deletions(-) -- 1.9.1 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH v8 1/2] mtd: spi-nor: add spi_nor_init() function 2017-08-22 20:45 [PATCH v8 0/2] Add spi-nor flash device pm support Kamal Dasu @ 2017-08-22 20:45 ` Kamal Dasu 2017-10-10 16:25 ` Cyrille Pitchen 2017-08-22 20:45 ` [PATCH v8 2/2] mtd: spi-nor: Add spi-nor mtd resume handler Kamal Dasu 1 sibling, 1 reply; 6+ messages in thread From: Kamal Dasu @ 2017-08-22 20:45 UTC (permalink / raw) To: cyrille.pitchen, marek.vasut Cc: computersforpeace, boris.brezillon, richard, linux-mtd, linux-kernel, f.fainelli, bcm-kernel-feedback-list, Kamal Dasu This patch extracts some chunks from spi_nor_init_params and spi_nor_scan() and moves them into a new spi_nor_init() function. Indeed, spi_nor_init() regroups all the required SPI flash commands to be sent to the SPI flash memory before performing any runtime operations (Fast Read, Page Program, Sector Erase, ...). Hence spi_nor_init(): 1) removes the flash protection if applicable for certain vendors. 2) sets the Quad Enable bit, if needed, before using Quad SPI protocols. 3) makes the memory enter its (stateful) 4-byte address mode, if needed, for SPI flash memory > 128Mbits not supporting the 4-byte address instruction set. spi_nor_scan() now ends by calling spi_nor_init() once the probe phase has completed. Further patches could also use spi_nor_init() to implement the mtd->_resume() handler for the spi-nor framework. Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com> --- drivers/mtd/spi-nor/spi-nor.c | 54 ++++++++++++++++++++++++++++--------------- include/linux/mtd/spi-nor.h | 10 ++++++++ 2 files changed, 46 insertions(+), 18 deletions(-) diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c index 1413828..ab98ecff 100644 --- a/drivers/mtd/spi-nor/spi-nor.c +++ b/drivers/mtd/spi-nor/spi-nor.c @@ -1832,14 +1832,42 @@ static int spi_nor_setup(struct spi_nor *nor, const struct flash_info *info, /* Enable Quad I/O if needed. */ enable_quad_io = (spi_nor_get_protocol_width(nor->read_proto) == 4 || spi_nor_get_protocol_width(nor->write_proto) == 4); - if (enable_quad_io && params->quad_enable) { - err = params->quad_enable(nor); + if (enable_quad_io && params->quad_enable) + nor->quad_enable = params->quad_enable; + + return 0; +} + +static int spi_nor_init(struct spi_nor *nor) +{ + int err; + + /* + * Atmel, SST, Intel/Numonyx, and others serial NOR tend to power up + * with the software protection bits set + */ + if (JEDEC_MFR(nor->info) == SNOR_MFR_ATMEL || + JEDEC_MFR(nor->info) == SNOR_MFR_INTEL || + JEDEC_MFR(nor->info) == SNOR_MFR_SST || + nor->info->flags & SPI_NOR_HAS_LOCK) { + write_enable(nor); + write_sr(nor, 0); + spi_nor_wait_till_ready(nor); + } + + if (nor->quad_enable) { + err = nor->quad_enable(nor); if (err) { dev_err(nor->dev, "quad mode not supported\n"); return err; } } + if ((nor->addr_width == 4) && + (JEDEC_MFR(nor->info) != SNOR_MFR_SPANSION) && + !(nor->info->flags & SPI_NOR_4B_OPCODES)) + set_4byte(nor, nor->info, 1); + return 0; } @@ -1910,20 +1938,6 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, if (ret) return ret; - /* - * Atmel, SST, Intel/Numonyx, and others serial NOR tend to power up - * with the software protection bits set - */ - - if (JEDEC_MFR(info) == SNOR_MFR_ATMEL || - JEDEC_MFR(info) == SNOR_MFR_INTEL || - JEDEC_MFR(info) == SNOR_MFR_SST || - info->flags & SPI_NOR_HAS_LOCK) { - write_enable(nor); - write_sr(nor, 0); - spi_nor_wait_till_ready(nor); - } - if (!mtd->name) mtd->name = dev_name(dev); mtd->priv = nor; @@ -2002,8 +2016,6 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, if (JEDEC_MFR(info) == SNOR_MFR_SPANSION || info->flags & SPI_NOR_4B_OPCODES) spi_nor_set_4byte_opcodes(nor, info); - else - set_4byte(nor, info, 1); } else { nor->addr_width = 3; } @@ -2020,6 +2032,12 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, return ret; } + /* Send all the required SPI flash commands to initialize device */ + nor->info = info; + ret = spi_nor_init(nor); + if (ret) + return ret; + dev_info(dev, "%s (%lld Kbytes)\n", info->name, (long long)mtd->size >> 10); diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h index 55faa2f..247f8fb 100644 --- a/include/linux/mtd/spi-nor.h +++ b/include/linux/mtd/spi-nor.h @@ -221,10 +221,17 @@ enum spi_nor_option_flags { }; /** + * struct flash_info - Forward declaration of a structure used internally by + * spi_nor_scan() + */ +struct flash_info; + +/** * struct spi_nor - Structure for defining a the SPI NOR layer * @mtd: point to a mtd_info structure * @lock: the lock for the read/write/erase/lock/unlock operations * @dev: point to a spi device, or a spi nor controller device. + * @info: spi-nor part JDEC MFR id and other info * @page_size: the page size of the SPI NOR * @addr_width: number of address bytes * @erase_opcode: the opcode for erasing a sector @@ -251,6 +258,7 @@ enum spi_nor_option_flags { * @flash_lock: [FLASH-SPECIFIC] lock a region of the SPI NOR * @flash_unlock: [FLASH-SPECIFIC] unlock a region of the SPI NOR * @flash_is_locked: [FLASH-SPECIFIC] check if a region of the SPI NOR is + * @quad_enable: [FLASH-SPECIFIC] enables SPI NOR quad mode * completely locked * @priv: the private data */ @@ -258,6 +266,7 @@ struct spi_nor { struct mtd_info mtd; struct mutex lock; struct device *dev; + const struct flash_info *info; u32 page_size; u8 addr_width; u8 erase_opcode; @@ -285,6 +294,7 @@ struct spi_nor { int (*flash_lock)(struct spi_nor *nor, loff_t ofs, uint64_t len); int (*flash_unlock)(struct spi_nor *nor, loff_t ofs, uint64_t len); int (*flash_is_locked)(struct spi_nor *nor, loff_t ofs, uint64_t len); + int (*quad_enable)(struct spi_nor *nor); void *priv; }; -- 1.9.1 ^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH v8 1/2] mtd: spi-nor: add spi_nor_init() function 2017-08-22 20:45 ` [PATCH v8 1/2] mtd: spi-nor: add spi_nor_init() function Kamal Dasu @ 2017-10-10 16:25 ` Cyrille Pitchen 0 siblings, 0 replies; 6+ messages in thread From: Cyrille Pitchen @ 2017-10-10 16:25 UTC (permalink / raw) To: Kamal Dasu, marek.vasut Cc: computersforpeace, boris.brezillon, richard, linux-mtd, linux-kernel, f.fainelli, bcm-kernel-feedback-list Le 22/08/2017 à 22:45, Kamal Dasu a écrit : > This patch extracts some chunks from spi_nor_init_params and spi_nor_scan() > and moves them into a new spi_nor_init() function. > > Indeed, spi_nor_init() regroups all the required SPI flash commands to be > sent to the SPI flash memory before performing any runtime operations > (Fast Read, Page Program, Sector Erase, ...). Hence spi_nor_init(): > 1) removes the flash protection if applicable for certain vendors. > 2) sets the Quad Enable bit, if needed, before using Quad SPI protocols. > 3) makes the memory enter its (stateful) 4-byte address mode, if needed, > for SPI flash memory > 128Mbits not supporting the 4-byte address > instruction set. > > spi_nor_scan() now ends by calling spi_nor_init() once the probe phase has > completed. Further patches could also use spi_nor_init() to implement the > mtd->_resume() handler for the spi-nor framework. > > Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com> Applied to the spi-nor/next branch of l2-mtd with a tiny change below Thanks! > --- > drivers/mtd/spi-nor/spi-nor.c | 54 ++++++++++++++++++++++++++++--------------- > include/linux/mtd/spi-nor.h | 10 ++++++++ > 2 files changed, 46 insertions(+), 18 deletions(-) > > diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c > index 1413828..ab98ecff 100644 > --- a/drivers/mtd/spi-nor/spi-nor.c > +++ b/drivers/mtd/spi-nor/spi-nor.c > @@ -1832,14 +1832,42 @@ static int spi_nor_setup(struct spi_nor *nor, const struct flash_info *info, > /* Enable Quad I/O if needed. */ > enable_quad_io = (spi_nor_get_protocol_width(nor->read_proto) == 4 || > spi_nor_get_protocol_width(nor->write_proto) == 4); > - if (enable_quad_io && params->quad_enable) { > - err = params->quad_enable(nor); > + if (enable_quad_io && params->quad_enable) > + nor->quad_enable = params->quad_enable; + else + nor->quad_enable = NULL; hence nor->quad_enable is always initialized. > + > + return 0; > +} > + > +static int spi_nor_init(struct spi_nor *nor) > +{ > + int err; > + > + /* > + * Atmel, SST, Intel/Numonyx, and others serial NOR tend to power up > + * with the software protection bits set > + */ > + if (JEDEC_MFR(nor->info) == SNOR_MFR_ATMEL || > + JEDEC_MFR(nor->info) == SNOR_MFR_INTEL || > + JEDEC_MFR(nor->info) == SNOR_MFR_SST || > + nor->info->flags & SPI_NOR_HAS_LOCK) { > + write_enable(nor); > + write_sr(nor, 0); > + spi_nor_wait_till_ready(nor); > + } > + > + if (nor->quad_enable) { > + err = nor->quad_enable(nor); > if (err) { > dev_err(nor->dev, "quad mode not supported\n"); > return err; > } > } > > + if ((nor->addr_width == 4) && > + (JEDEC_MFR(nor->info) != SNOR_MFR_SPANSION) && > + !(nor->info->flags & SPI_NOR_4B_OPCODES)) > + set_4byte(nor, nor->info, 1); > + > return 0; > } > > @@ -1910,20 +1938,6 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, > if (ret) > return ret; > > - /* > - * Atmel, SST, Intel/Numonyx, and others serial NOR tend to power up > - * with the software protection bits set > - */ > - > - if (JEDEC_MFR(info) == SNOR_MFR_ATMEL || > - JEDEC_MFR(info) == SNOR_MFR_INTEL || > - JEDEC_MFR(info) == SNOR_MFR_SST || > - info->flags & SPI_NOR_HAS_LOCK) { > - write_enable(nor); > - write_sr(nor, 0); > - spi_nor_wait_till_ready(nor); > - } > - > if (!mtd->name) > mtd->name = dev_name(dev); > mtd->priv = nor; > @@ -2002,8 +2016,6 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, > if (JEDEC_MFR(info) == SNOR_MFR_SPANSION || > info->flags & SPI_NOR_4B_OPCODES) > spi_nor_set_4byte_opcodes(nor, info); > - else > - set_4byte(nor, info, 1); > } else { > nor->addr_width = 3; > } > @@ -2020,6 +2032,12 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, > return ret; > } > > + /* Send all the required SPI flash commands to initialize device */ > + nor->info = info; > + ret = spi_nor_init(nor); > + if (ret) > + return ret; > + > dev_info(dev, "%s (%lld Kbytes)\n", info->name, > (long long)mtd->size >> 10); > > diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h > index 55faa2f..247f8fb 100644 > --- a/include/linux/mtd/spi-nor.h > +++ b/include/linux/mtd/spi-nor.h > @@ -221,10 +221,17 @@ enum spi_nor_option_flags { > }; > > /** > + * struct flash_info - Forward declaration of a structure used internally by > + * spi_nor_scan() > + */ > +struct flash_info; > + > +/** > * struct spi_nor - Structure for defining a the SPI NOR layer > * @mtd: point to a mtd_info structure > * @lock: the lock for the read/write/erase/lock/unlock operations > * @dev: point to a spi device, or a spi nor controller device. > + * @info: spi-nor part JDEC MFR id and other info > * @page_size: the page size of the SPI NOR > * @addr_width: number of address bytes > * @erase_opcode: the opcode for erasing a sector > @@ -251,6 +258,7 @@ enum spi_nor_option_flags { > * @flash_lock: [FLASH-SPECIFIC] lock a region of the SPI NOR > * @flash_unlock: [FLASH-SPECIFIC] unlock a region of the SPI NOR > * @flash_is_locked: [FLASH-SPECIFIC] check if a region of the SPI NOR is > + * @quad_enable: [FLASH-SPECIFIC] enables SPI NOR quad mode > * completely locked > * @priv: the private data > */ > @@ -258,6 +266,7 @@ struct spi_nor { > struct mtd_info mtd; > struct mutex lock; > struct device *dev; > + const struct flash_info *info; > u32 page_size; > u8 addr_width; > u8 erase_opcode; > @@ -285,6 +294,7 @@ struct spi_nor { > int (*flash_lock)(struct spi_nor *nor, loff_t ofs, uint64_t len); > int (*flash_unlock)(struct spi_nor *nor, loff_t ofs, uint64_t len); > int (*flash_is_locked)(struct spi_nor *nor, loff_t ofs, uint64_t len); > + int (*quad_enable)(struct spi_nor *nor); > > void *priv; > }; > ^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH v8 2/2] mtd: spi-nor: Add spi-nor mtd resume handler 2017-08-22 20:45 [PATCH v8 0/2] Add spi-nor flash device pm support Kamal Dasu 2017-08-22 20:45 ` [PATCH v8 1/2] mtd: spi-nor: add spi_nor_init() function Kamal Dasu @ 2017-08-22 20:45 ` Kamal Dasu 2017-08-23 7:06 ` Cyrille Pitchen 2017-10-10 16:25 ` Cyrille Pitchen 1 sibling, 2 replies; 6+ messages in thread From: Kamal Dasu @ 2017-08-22 20:45 UTC (permalink / raw) To: cyrille.pitchen, marek.vasut Cc: computersforpeace, boris.brezillon, richard, linux-mtd, linux-kernel, f.fainelli, bcm-kernel-feedback-list, Kamal Dasu Implemented and populated spi-nor mtd PM handlers for resume ops. spi-nor resume op re-initializes spi-nor flash to its probed state by calling the newly implemented spi_nor_init() function. Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com> --- drivers/mtd/spi-nor/spi-nor.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c index ab98ecff..69164bc 100644 --- a/drivers/mtd/spi-nor/spi-nor.c +++ b/drivers/mtd/spi-nor/spi-nor.c @@ -1871,6 +1871,19 @@ static int spi_nor_init(struct spi_nor *nor) return 0; } +/* mtd resume handler */ +static void spi_nor_resume(struct mtd_info *mtd) +{ + struct spi_nor *nor = mtd_to_spi_nor(mtd); + struct device *dev = nor->dev; + int ret; + + /* re-initialize the nor chip */ + ret = spi_nor_init(nor); + if (ret) + dev_err(dev, "resume() failed\n"); +} + int spi_nor_scan(struct spi_nor *nor, const char *name, const struct spi_nor_hwcaps *hwcaps) { @@ -1947,6 +1960,7 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, mtd->size = params.size; mtd->_erase = spi_nor_erase; mtd->_read = spi_nor_read; + mtd->_resume = spi_nor_resume; /* NOR protection support for STmicro/Micron chips and similar */ if (JEDEC_MFR(info) == SNOR_MFR_MICRON || -- 1.9.1 ^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH v8 2/2] mtd: spi-nor: Add spi-nor mtd resume handler 2017-08-22 20:45 ` [PATCH v8 2/2] mtd: spi-nor: Add spi-nor mtd resume handler Kamal Dasu @ 2017-08-23 7:06 ` Cyrille Pitchen 2017-10-10 16:25 ` Cyrille Pitchen 1 sibling, 0 replies; 6+ messages in thread From: Cyrille Pitchen @ 2017-08-23 7:06 UTC (permalink / raw) To: Kamal Dasu, marek.vasut Cc: boris.brezillon, f.fainelli, richard, linux-kernel, linux-mtd, bcm-kernel-feedback-list, computersforpeace Hi Kamal, Le 22/08/2017 à 22:45, Kamal Dasu a écrit : > Implemented and populated spi-nor mtd PM handlers for resume ops. > spi-nor resume op re-initializes spi-nor flash to its probed > state by calling the newly implemented spi_nor_init() function. > > Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com> > --- > drivers/mtd/spi-nor/spi-nor.c | 14 ++++++++++++++ > 1 file changed, 14 insertions(+) > > diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c > index ab98ecff..69164bc 100644 > --- a/drivers/mtd/spi-nor/spi-nor.c > +++ b/drivers/mtd/spi-nor/spi-nor.c > @@ -1871,6 +1871,19 @@ static int spi_nor_init(struct spi_nor *nor) > return 0; > } > > +/* mtd resume handler */ > +static void spi_nor_resume(struct mtd_info *mtd) > +{ > + struct spi_nor *nor = mtd_to_spi_nor(mtd); > + struct device *dev = nor->dev; > + int ret; > + > + /* re-initialize the nor chip */ > + ret = spi_nor_init(nor); > + if (ret) > + dev_err(dev, "resume() failed\n"); > +} > + > int spi_nor_scan(struct spi_nor *nor, const char *name, > const struct spi_nor_hwcaps *hwcaps) > { > @@ -1947,6 +1960,7 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, > mtd->size = params.size; > mtd->_erase = spi_nor_erase; > mtd->_read = spi_nor_read; > + mtd->_resume = spi_nor_resume; > The series now looks good to me. Just waiting for Marek's acked-by/reviewed-by to double-check. Marek: I can't test with the Cadence QSPI controller but based on the line "mtd->dev.parent = nor->dev;" in spi_nor_scan(), I think this patch won't conflit with the already PM code in the cadence-quadspi.c driver. As far as I understand, cqspi_resume() will be called before mtd_resume() / spi_nor_resume(). Best regards, Cyrille > /* NOR protection support for STmicro/Micron chips and similar */ > if (JEDEC_MFR(info) == SNOR_MFR_MICRON || > ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH v8 2/2] mtd: spi-nor: Add spi-nor mtd resume handler 2017-08-22 20:45 ` [PATCH v8 2/2] mtd: spi-nor: Add spi-nor mtd resume handler Kamal Dasu 2017-08-23 7:06 ` Cyrille Pitchen @ 2017-10-10 16:25 ` Cyrille Pitchen 1 sibling, 0 replies; 6+ messages in thread From: Cyrille Pitchen @ 2017-10-10 16:25 UTC (permalink / raw) To: Kamal Dasu, marek.vasut Cc: boris.brezillon, f.fainelli, richard, linux-kernel, linux-mtd, bcm-kernel-feedback-list, computersforpeace Le 22/08/2017 à 22:45, Kamal Dasu a écrit : > Implemented and populated spi-nor mtd PM handlers for resume ops. > spi-nor resume op re-initializes spi-nor flash to its probed > state by calling the newly implemented spi_nor_init() function. > > Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com> Applied to the spi-nor/next branch of l2-mtd Thanks! > --- > drivers/mtd/spi-nor/spi-nor.c | 14 ++++++++++++++ > 1 file changed, 14 insertions(+) > > diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c > index ab98ecff..69164bc 100644 > --- a/drivers/mtd/spi-nor/spi-nor.c > +++ b/drivers/mtd/spi-nor/spi-nor.c > @@ -1871,6 +1871,19 @@ static int spi_nor_init(struct spi_nor *nor) > return 0; > } > > +/* mtd resume handler */ > +static void spi_nor_resume(struct mtd_info *mtd) > +{ > + struct spi_nor *nor = mtd_to_spi_nor(mtd); > + struct device *dev = nor->dev; > + int ret; > + > + /* re-initialize the nor chip */ > + ret = spi_nor_init(nor); > + if (ret) > + dev_err(dev, "resume() failed\n"); > +} > + > int spi_nor_scan(struct spi_nor *nor, const char *name, > const struct spi_nor_hwcaps *hwcaps) > { > @@ -1947,6 +1960,7 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, > mtd->size = params.size; > mtd->_erase = spi_nor_erase; > mtd->_read = spi_nor_read; > + mtd->_resume = spi_nor_resume; > > /* NOR protection support for STmicro/Micron chips and similar */ > if (JEDEC_MFR(info) == SNOR_MFR_MICRON || > ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2017-10-10 16:26 UTC | newest] Thread overview: 6+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2017-08-22 20:45 [PATCH v8 0/2] Add spi-nor flash device pm support Kamal Dasu 2017-08-22 20:45 ` [PATCH v8 1/2] mtd: spi-nor: add spi_nor_init() function Kamal Dasu 2017-10-10 16:25 ` Cyrille Pitchen 2017-08-22 20:45 ` [PATCH v8 2/2] mtd: spi-nor: Add spi-nor mtd resume handler Kamal Dasu 2017-08-23 7:06 ` Cyrille Pitchen 2017-10-10 16:25 ` Cyrille Pitchen
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