| Message ID | 20210504161222.101536-1-ulf.hansson@linaro.org |
|---|---|
| Headers | show |
| Series | Initital support for new power/perf features for SD cards | expand |
> > In the SD spec v4.x the SD function extension registers were introduced, > together with a new set of commands (CMD48/49 and CMD58/59) to read > and write > to them. > > Moreover, in v4.x a new standard function for power management features > were > added, while in v6.x a new standard function for performance > enhancements > features were added. > > This series implement the basics to add support for these new features (and > includes some additional preparations in patch 1->7), by adding support for > reading and parsing these new SD registers. In the final patch we add > support > for the SD poweroff notification feature, which also add a function to write > to > these registers. > > Note that, there are no HW updates need for the host to support > reading/parsing > of the these new SD registers. This has been tested with a 64GB Sandisk > Extreme > PRO UHS-I A2 card. > > Tests and reviews are of course greatly appreciated! Echoing an internal discussion about this series: "... That is very good that there will be a support of the extension registers of SD spec . It may allow existing and future features to be very easily supported by hosts (like existing power off control and future TCG/RPMB related spec which is currently under definition and is going to use those registers as well..). ..." Therefore for entire series: Acked-by: Avri Altman <avri.altman@wdc.com>
On Fri, 7 May 2021 at 08:44, Avri Altman <Avri.Altman@wdc.com> wrote: > > > > > In the SD spec v4.x the SD function extension registers were introduced, > > together with a new set of commands (CMD48/49 and CMD58/59) to read > > and write > > to them. > > > > Moreover, in v4.x a new standard function for power management features > > were > > added, while in v6.x a new standard function for performance > > enhancements > > features were added. > > > > This series implement the basics to add support for these new features (and > > includes some additional preparations in patch 1->7), by adding support for > > reading and parsing these new SD registers. In the final patch we add > > support > > for the SD poweroff notification feature, which also add a function to write > > to > > these registers. > > > > Note that, there are no HW updates need for the host to support > > reading/parsing > > of the these new SD registers. This has been tested with a 64GB Sandisk > > Extreme > > PRO UHS-I A2 card. > > > > Tests and reviews are of course greatly appreciated! > Echoing an internal discussion about this series: > "... > That is very good that there will be a support of the extension registers of SD spec . It may allow existing and future features to be very easily supported by hosts (like existing power off control and future TCG/RPMB related spec which is currently under definition and is going to use those registers as well..). Thanks for sharing. I am happy to help! > ..." > Therefore for entire series: Acked-by: Avri Altman <avri.altman@wdc.com> Thanks for reviewing! Kind regards Uffe
On Tue, 4 May 2021 at 18:12, Ulf Hansson <ulf.hansson@linaro.org> wrote: > > In the SD spec v4.x the SD function extension registers were introduced, > together with a new set of commands (CMD48/49 and CMD58/59) to read and write > to them. > > Moreover, in v4.x a new standard function for power management features were > added, while in v6.x a new standard function for performance enhancements > features were added. > > This series implement the basics to add support for these new features (and > includes some additional preparations in patch 1->7), by adding support for > reading and parsing these new SD registers. In the final patch we add support > for the SD poweroff notification feature, which also add a function to write to > these registers. > > Note that, there are no HW updates need for the host to support reading/parsing > of the these new SD registers. This has been tested with a 64GB Sandisk Extreme > PRO UHS-I A2 card. > > Tests and reviews are of course greatly appreciated! > > Kind regards > Ulf Hansson > > Ulf Hansson (11): > mmc: core: Drop open coding when preparing commands with busy > signaling > mmc: core: Take into account MMC_CAP_NEED_RSP_BUSY for eMMC HPI > commands > mmc: core: Re-structure some code in __mmc_poll_for_busy() > mmc: core: Extend re-use of __mmc_poll_for_busy() > mmc: core: Enable eMMC sleep commands to use HW busy polling > mmc: core: Prepare mmc_send_cxd_data() to be re-used for additional > cmds > mmc: core: Drop open coding in mmc_sd_switch() > mmc: core: Parse the SD SCR register for support of CMD48/49 and > CMD58/59 > mmc: core: Read the SD function extension registers for power > management > mmc: core: Read performance enhancements registers for SD cards > mmc: core: Add support for Power Off Notification for SD cards > > drivers/mmc/core/core.c | 22 +-- > drivers/mmc/core/mmc.c | 43 ++--- > drivers/mmc/core/mmc_ops.c | 137 +++++++------- > drivers/mmc/core/mmc_ops.h | 10 +- > drivers/mmc/core/sd.c | 371 ++++++++++++++++++++++++++++++++++++- > drivers/mmc/core/sd_ops.c | 38 +--- > include/linux/mmc/card.h | 22 +++ > include/linux/mmc/sd.h | 4 + > 8 files changed, 504 insertions(+), 143 deletions(-) FYI, this series has been applied for next, with some minor modifications according to review comments. Thanks! Kind regards Uffe
In the SD spec v4.x the SD function extension registers were introduced, together with a new set of commands (CMD48/49 and CMD58/59) to read and write to them. Moreover, in v4.x a new standard function for power management features were added, while in v6.x a new standard function for performance enhancements features were added. This series implement the basics to add support for these new features (and includes some additional preparations in patch 1->7), by adding support for reading and parsing these new SD registers. In the final patch we add support for the SD poweroff notification feature, which also add a function to write to these registers. Note that, there are no HW updates need for the host to support reading/parsing of the these new SD registers. This has been tested with a 64GB Sandisk Extreme PRO UHS-I A2 card. Tests and reviews are of course greatly appreciated! Kind regards Ulf Hansson Ulf Hansson (11): mmc: core: Drop open coding when preparing commands with busy signaling mmc: core: Take into account MMC_CAP_NEED_RSP_BUSY for eMMC HPI commands mmc: core: Re-structure some code in __mmc_poll_for_busy() mmc: core: Extend re-use of __mmc_poll_for_busy() mmc: core: Enable eMMC sleep commands to use HW busy polling mmc: core: Prepare mmc_send_cxd_data() to be re-used for additional cmds mmc: core: Drop open coding in mmc_sd_switch() mmc: core: Parse the SD SCR register for support of CMD48/49 and CMD58/59 mmc: core: Read the SD function extension registers for power management mmc: core: Read performance enhancements registers for SD cards mmc: core: Add support for Power Off Notification for SD cards drivers/mmc/core/core.c | 22 +-- drivers/mmc/core/mmc.c | 43 ++--- drivers/mmc/core/mmc_ops.c | 137 +++++++------- drivers/mmc/core/mmc_ops.h | 10 +- drivers/mmc/core/sd.c | 371 ++++++++++++++++++++++++++++++++++++- drivers/mmc/core/sd_ops.c | 38 +--- include/linux/mmc/card.h | 22 +++ include/linux/mmc/sd.h | 4 + 8 files changed, 504 insertions(+), 143 deletions(-) -- 2.25.1