- Jul 10, 2019
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Baolin Wang authored
When changing SD card voltage signal for Spreadtrum SD host controller, it also need to switch related pin's state. Thus add pinctrl properties' description in documentation. Signed-off-by:
Baolin Wang <baolin.wang@linaro.org> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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Baolin Wang authored
For Spreadtrum SD host controller, we can not use standard SD registers to change and detect the I/O voltage signals, since our voltage regulator for I/O is fixed in hardware, and no signals were connected to the SD controller. Thus add Spreadtrum specific voltage switch ops to change voltage instead of using standard SD host registers. Signed-off-by:
Baolin Wang <baolin.wang@linaro.org> Acked-by:
Adrian Hunter <adrian.hunter@intel.com> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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Adrian Hunter authored
Add PCI Ids for Intel EHL. Signed-off-by:
Adrian Hunter <adrian.hunter@intel.com> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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Yoshihiro Shimoda authored
Since the commit 133d624b ("dma: Introduce dma_max_mapping_size()") provides a helper function to get the max mapping size, we can use the function instead of the workaround code for swiotlb. Signed-off-by:
Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Acked-by:
Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by:
Christoph Hellwig <hch@lst.de> Reviewed-by:
Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by:
Simon Horman <horms+renesas@verge.net.au> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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Ulf Hansson authored
The "powered_resume" in-parameter to mmc_sdio_init_card() has now become redundant as all callers set it to 0. Therefore let's just drop it. Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by:
Douglas Anderson <dianders@chromium.org> Tested-by:
Douglas Anderson <dianders@chromium.org>
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Ulf Hansson authored
The "powered_resume" in-parameter to mmc_sdio_reinit_card() has now become redundant as all callers set it to 0. Therefore let's just drop it. Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by:
Douglas Anderson <dianders@chromium.org> Tested-by:
Douglas Anderson <dianders@chromium.org>
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Ulf Hansson authored
It looks like the original idea behind always doing a re-initialization of a removable SDIO card during system resume in mmc_sdio_resume(), is to try to play safe to detect whether the card has been removed. However, this seems like a really a bad idea as it will most likely screw things up, especially when the card is expected to remain powered on during system suspend by the SDIO func driver. Let's fix this, simply by trusting that the detect work checks if the card is alive and inserted, which is being scheduled at the PM_POST_SUSPEND notification anyway. Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org> Tested-by:
Douglas Anderson <dianders@chromium.org> Reviewed-by:
Douglas Anderson <dianders@chromium.org>
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Ulf Hansson authored
To use the so called powered-on re-initialization of an SDIO card, the power to the card must obviously have stayed on. If not, the initialization will simply fail. In the runtime suspend case, the card is always powered off. Hence, let's drop the support for powered-on re-initialization during runtime resume, as it doesn't make sense. Moreover, during a HW reset, the point is to cut the power to the card and then do fresh re-initialization. Therefore drop the support for powered-on re-initialization during HW reset. Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org> Fixes: ca8971ca ("mmc: dw_mmc: Prevent runtime PM suspend when SDIO IRQs are enabled") Tested-by:
Douglas Anderson <dianders@chromium.org>
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Ulf Hansson authored
The comment in mmc_sdio_power_restore() belongs in mmc_sdio_reinit_card(), which was created during a previous commit that re-factored some code. Fix this by moving the comment into mmc_sdio_reinit_card(). Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by:
Douglas Anderson <dianders@chromium.org>
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Ulf Hansson authored
The function mmc_sdio_power_restore() is called either from mmc_sdio_runtime_resume() or from mmc_sdio_hw_reset(). Both callers either claims/releases the host or require its callers to do so. Therefore let's drop the redundant calls to mmc_claim|release_host() in mmc_sdio_power_restore(). Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by:
Douglas Anderson <dianders@chromium.org> Tested-by:
Douglas Anderson <dianders@chromium.org>
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- Jun 20, 2019
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Ulf Hansson authored
All external users of sdio_run_irqs() have converted into using the preferred sdio_signal_irq() interface, thus not calling the function directly any more. Avoid further new users of it, by turning it into static. Suggested-by:
Douglas Anderson <dianders@chromium.org> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by:
Douglas Anderson <dianders@chromium.org> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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- Jun 18, 2019
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Ulf Hansson authored
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Ulf Hansson authored
Processing of SDIO IRQs must obviously be prevented while the card is system suspended, otherwise we may end up trying to communicate with an uninitialized SDIO card. Reports throughout the years shows that this is not only a theoretical problem, but a real issue. So, let's finally fix this problem, by keeping track of the state for the card and bail out before processing the SDIO IRQ, in case the card is suspended. Cc: stable@vger.kernel.org Reported-by:
Douglas Anderson <dianders@chromium.org> Tested-by:
Douglas Anderson <dianders@chromium.org> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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Raul E Rangel authored
Remove whitespace in front of SDHCI_CTRL_8BITBUS. The value is not part of SDHCI_CTRL_DMA_MASK. Signed-off-by:
Raul E Rangel <rrangel@chromium.org> Acked-by:
Adrian Hunter <adrian.hunter@intel.com> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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Raul E Rangel authored
The O2 controller supports 8-bit EMMC access. JESD84-B51 section A.6.3.a defines the bus testing procedure that `mmc_select_bus_width()` implements. This is used to determine the actual bus width of the eMMC. Signed-off-by:
Raul E Rangel <rrangel@chromium.org> Acked-by:
Adrian Hunter <adrian.hunter@intel.com> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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Ulf Hansson authored
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Raul E Rangel authored
The O2Micro controller only supports tuning at 4-bits. So the host driver needs to change the bus width while tuning and then set it back when done. There was a bug in the original implementation in that mmc->ios.bus_width also wasn't updated. Thus setting the incorrect blocksize in sdhci_send_tuning which results in a tuning failure. Signed-off-by:
Raul E Rangel <rrangel@chromium.org> Fixes: 0086fc21 ("mmc: sdhci: Add support for O2 hardware tuning") Acked-by:
Adrian Hunter <adrian.hunter@intel.com> Cc: stable@vger.kernel.org Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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Ulf Hansson authored
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Douglas Anderson authored
When Broadcom SDIO cards are idled they go to sleep and a whole separate subsystem takes over their SDIO communication. This is the Always-On-Subsystem (AOS) and it can't handle tuning requests. Specifically, as tested on rk3288-veyron-minnie (which reports having BCM4354/1 in dmesg), if I force a retune in brcmf_sdio_kso_control() when "on = 1" (aka we're transition from sleep to wake) by whacking: bus->sdiodev->func1->card->host->need_retune = 1 ...then I can often see tuning fail. In this case dw_mmc reports "All phases bad!"). Note that I don't get 100% failure, presumably because sometimes the card itself has already transitioned away from the AOS itself by the time we try to wake it up. If I force retuning when "on = 0" (AKA force retuning right before sending the command to go to sleep) then retuning is always OK. NOTE: we need _both_ this patch and the patch to avoid triggering tuning due to CRC errors in the sleep/wake transition, AKA ("brcmfmac: sdio: Disable auto-tuning around commands expected to fail"). Though both patches handle issues with Broadcom's AOS, the problems are distinct: 1. We want to defer (but not ignore) asynchronous (like timer-requested) tuning requests till the card is awake. However, we want to ignore CRC errors during the transition, we don't want to queue deferred tuning request. 2. You could imagine that the AOS could implement retuning but we could still get errors while transitioning in and out of the AOS. Similarly you could imagine a seamless transition into and out of the AOS (with no CRC errors) even if the AOS couldn't handle tuning. ALSO NOTE: presumably there is never a desperate need to retune in order to wake up the card, since doing so is impossible. Luckily the only way the card can get into sleep state is if we had a good enough tuning to send it the command to put it into sleep, so presumably that "good enough" tuning is enough to wake us up, at least with a few retries. Cc: stable@vger.kernel.org #v4.18+ Signed-off-by:
Douglas Anderson <dianders@chromium.org> Acked-by:
Adrian Hunter <adrian.hunter@intel.com> Reviewed-by:
Arend van Spriel <arend.vanspriel@broadcom.com> Acked-by:
Kalle Valo <kvalo@codeaurora.org> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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Douglas Anderson authored
We want SDIO drivers to be able to temporarily stop retuning when the driver knows that the SDIO card is not in a state where retuning will work (maybe because the card is asleep). We'll move the relevant functions to a place where drivers can call them. Cc: stable@vger.kernel.org #v4.18+ Signed-off-by:
Douglas Anderson <dianders@chromium.org> Acked-by:
Adrian Hunter <adrian.hunter@intel.com> Acked-by:
Kalle Valo <kvalo@codeaurora.org> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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Douglas Anderson authored
There are certain cases, notably when transitioning between sleep and active state, when Broadcom SDIO WiFi cards will produce errors on the SDIO bus. This is evident from the source code where you can see that we try commands in a loop until we either get success or we've tried too many times. The comment in the code reinforces this by saying "just one write attempt may fail" Unfortunately these failures sometimes end up causing an "-EILSEQ" back to the core which triggers a retuning of the SDIO card and that blocks all traffic to the card until it's done. Let's disable retuning around the commands we expect might fail. Cc: stable@vger.kernel.org #v4.18+ Signed-off-by:
Douglas Anderson <dianders@chromium.org> Acked-by:
Adrian Hunter <adrian.hunter@intel.com> Reviewed-by:
Arend van Spriel <arend.vanspriel@broadcom.com> Acked-by:
Kalle Valo <kvalo@codeaurora.org> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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Douglas Anderson authored
Normally when the MMC core sees an "-EILSEQ" error returned by a host controller then it will trigger a retuning of the card. This is generally a good idea. However, if a command is expected to sometimes cause transfer errors then these transfer errors shouldn't cause a re-tuning. This re-tuning will be a needless waste of time. One example case where a transfer is expected to cause errors is when transitioning between idle (sometimes referred to as "sleep" in Broadcom code) and active state on certain Broadcom WiFi SDIO cards. Specifically if the card was already transitioning between states when the command was sent it could cause an error on the SDIO bus. Let's add an API that the SDIO function drivers can call that will temporarily disable the auto-tuning functionality. Then we can add a call to this in the Broadcom WiFi driver and any other driver that might have similar needs. NOTE: this makes the assumption that the card is already tuned well enough that it's OK to disable the auto-retuning during one of these error-prone situations. Presumably the driver code performing the error-prone transfer knows how to recover / retry from errors. ...and after we can get back to a state where transfers are no longer error-prone then we can enable the auto-retuning again. If we truly find ourselves in a case where the card needs to be retuned sometimes to handle one of these error-prone transfers then we can always try a few transfers first without auto-retuning and then re-try with auto-retuning if the first few fail. Without this change on rk3288-veyron-minnie I periodically see this in the logs of a machine just sitting there idle: dwmmc_rockchip ff0d0000.dwmmc: Successfully tuned phase to XYZ Cc: stable@vger.kernel.org #v4.18+ Signed-off-by:
Douglas Anderson <dianders@chromium.org> Acked-by:
Adrian Hunter <adrian.hunter@intel.com> Acked-by:
Kalle Valo <kvalo@codeaurora.org> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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Douglas Anderson authored
This reverts commit 29f65891. After that patch landed I find that my kernel log on rk3288-veyron-minnie and rk3288-veyron-speedy is filled with: brcmfmac: brcmf_sdio_bus_sleep: error while changing bus sleep state -110 This seems to happen every time the Broadcom WiFi transitions out of sleep mode. Reverting the commit fixes the problem for me, so that's what this patch does. Note that, in general, the justification in the original commit seemed a little weak. It looked like someone was testing on a SD card controller that would sometimes die if there were CRC errors on the bus. This used to happen back in early days of dw_mmc (the controller on my boards), but we fixed it. Disabling a feature on all boards just because one SD card controller is broken seems bad. Fixes: 29f65891 ("brcmfmac: disable command decode in sdio_aos") Cc: Wright Feng <wright.feng@cypress.com> Cc: Double Lo <double.lo@cypress.com> Cc: Madhan Mohan R <madhanmohan.r@cypress.com> Cc: Chi-Hsien Lin <chi-hsien.lin@cypress.com> Signed-off-by:
Douglas Anderson <dianders@chromium.org> Cc: stable@vger.kernel.org Acked-by:
Kalle Valo <kvalo@codeaurora.org> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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- Jun 17, 2019
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Yangbo Lu authored
LS1028A used 1/2 periperhal clock as one reference clock. Signed-off-by:
Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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Yangbo Lu authored
This patch is to set the sd clock divisor value above 3 in tuning mode Signed-off-by:
Yinbo Zhu <yinbo.zhu@nxp.com> Signed-off-by:
Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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Greg Kroah-Hartman authored
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Also, because there is no need to save the file dentries, remove them from the host-specific structure and just recursively delete the directory that the driver created, when shutting down. Cc: Ben Dooks <ben-linux@fluff.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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Greg Kroah-Hartman authored
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this Cc: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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Greg Kroah-Hartman authored
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Nicolas Ferre <nicolas.ferre@microchip.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by:
Alexandre Belloni <alexandre.belloni@bootlin.com> Acked-by:
Ludovic Desroches <ludovic.desroches@microchip.com> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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Greg Kroah-Hartman authored
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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Ulf Hansson authored
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jjian zhou authored
If cmd19 timeout or response crcerr occurs during execute_tuning(), it need invoke msdc_reset_hw(). Otherwise SDIO IRQ can't be detected. Signed-off-by:
jjian zhou <jjian.zhou@mediatek.com> Signed-off-by:
Chaotian Jing <chaotian.jing@mediatek.com> Signed-off-by:
Yong Mao <yong.mao@mediatek.com> Fixes: 5215b2e9 ("mmc: mediatek: Add MMC_CAP_SDIO_IRQ support") Cc: stable@vger.kernel.org Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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jjian zhou authored
SDIO IRQ is triggered by low level. It need disable SDIO IRQ detected function. Otherwise the interrupt register can't be cleared. It will process the interrupt more. Signed-off-by:
Jjian Zhou <jjian.zhou@mediatek.com> Signed-off-by:
Chaotian Jing <chaotian.jing@mediatek.com> Signed-off-by:
Yong Mao <yong.mao@mediatek.com> Fixes: 5215b2e9 ("mmc: mediatek: Add MMC_CAP_SDIO_IRQ support") Cc: stable@vger.kernel.org Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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Wolfram Sang authored
We don't have a reproducible error case, yet our BSP team suggested that the mmc_switch_status() command in mmc_select_hs400() should come after the callback into the driver completing HS400 setup. It makes sense to me because we want the status of a fully setup HS400, so it will increase the reliability of the mmc_switch_status() command. Reported-by:
Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by:
Wolfram Sang <wsa+renesas@sang-engineering.com> Fixes: ba6c7ac3 ("mmc: core: more fine-grained hooks for HS400 tuning") Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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Faiz Abbas authored
Add support for 4 bit instances on TI's J721E devices. Because these instances have no DLL, introduce a DLL_PRESENT flag and make sure DLL related registers are only accessed when it is present. Also add a separate set_clock callback for this compatible. Signed-off-by:
Faiz Abbas <faiz_abbas@ti.com> Acked-by:
Adrian Hunter <adrian.hunter@intel.com> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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Faiz Abbas authored
The 8 bit IP on the TI's J721E device departs from the AM654x IP in some ways which require special handling. Create a driver_data structure which holds the pltfm_data and a flags field which is used to indicate these differences. These are the following: 1. The pins are not muxed with anything else inside the SoC and hence the IOMUX_ENABLE field does not exist. Add a flag which is used to indicate the presence of the field. 2. The register field used to select DLL frequency is 3 bit wide as compared to 2 bits in AM65x. Add another flag which differentiates between 3 bit and 2 bit fields. 3. The strobe select field is 8 bit wide as compared to 4 bits for AM65x. Add yet another flag to indicate this difference. Strobe select is used only for HS400 speed mode, support for which has not yet been added in AM65x. Signed-off-by:
Faiz Abbas <faiz_abbas@ti.com> Acked-by:
Adrian Hunter <adrian.hunter@intel.com> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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Faiz Abbas authored
Add binding documentation for mmc host controllers present on TI's J721E SOC. The 4 bit IP on J721E doesn't have a phy DLL so make DLL related properties as optional for that compatible. Also add an optional strobe-sel property used for HS400 speed mode. Signed-off-by:
Faiz Abbas <faiz_abbas@ti.com> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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- Jun 10, 2019
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Wolfram Sang authored
Bools are initialized to 'false' by default. Signed-off-by:
Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by:
Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by:
Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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Wolfram Sang authored
Quirks show up in new SoCs as well, so the naming should be generic. Describe them by what they do. Signed-off-by:
Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by:
Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by:
Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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Ulf Hansson authored
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Thierry Reding authored
Recent changes have made it much more likely that clocks are not available, when the SDHCI driver is first probed. However, that is a situation that the driver can cope with just fine. To avoid confusion, don't output an error when this happens. Signed-off-by:
Thierry Reding <treding@nvidia.com> Acked-by:
Adrian Hunter <adrian.hunter@intel.com> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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