Commit Graph

6 Commits

Author SHA1 Message Date
Ziyang Huang
c82efcaad2 mmc: meson-mx-sdhc: Fix initialization frozen issue
commit 8c124d998ea0c9022e247b11ac51f86ec8afa0e1 upstream.

Commit 4bc31edebde5 ("mmc: core: Set HS clock speed before sending
HS CMD13") set HS clock (52MHz) before switching to HS mode. For this
freq, FCLK_DIV5 will be selected and div value is 10 (reg value is 9).
Then we set rx_clk_phase to 11 or 15 which is out of range and make
hardware frozen. After we send command request, no irq will be
interrupted and the mmc driver will keep to wait for request finished,
even durning rebooting.

So let's set it to Phase 90 which should work in most cases. Then let
meson_mx_sdhc_execute_tuning() to find the accurate value for data
transfer.

If this doesn't work, maybe need to define a factor in dts.

Fixes: e4bf1b0970 ("mmc: host: meson-mx-sdhc: new driver for the Amlogic Meson SDHC host")
Signed-off-by: Ziyang Huang <hzyitc@outlook.com>
Tested-by: Anand Moon <linux.amoon@gmail.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/TYZPR01MB5556A3E71554A2EC08597EA4C9CDA@TYZPR01MB5556.apcprd01.prod.exchangelabs.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-01-15 18:48:07 +01:00
Sergey Shtylyov
decb209954 mmc: meson-mx-sdhc: add IRQ check
[ Upstream commit 77bed755e0f06135faccdd3948863703f9a6e640 ]

The driver neglects to check the result of platform_get_irq()'s call and
blithely passes the negative error codes to devm_request_threaded_irq()
(which takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding
an original error code. Stop calling devm_request_threaded_irq() with the
invalid IRQ #s.

Fixes: e4bf1b0970 ("mmc: host: meson-mx-sdhc: new driver for the Amlogic Meson SDHC host")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20211217202717.10041-2-s.shtylyov@omp.ru
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-01-27 10:53:58 +01:00
Martin Blumenstingl
c8e366a01c mmc: meson-mx-sdhc: Set MANUAL_STOP for multi-block SDIO commands
commit f89b548ca66be7500dcd92ee8e61590f7d08ac91 upstream.

The vendor driver implements special handling for multi-block
SD_IO_RW_EXTENDED (and SD_IO_RW_DIRECT) commands which have data
attached to them. It sets the MANUAL_STOP bit in the MESON_SDHC_MISC
register for these commands. In all other cases this bit is cleared.
Here we omit SD_IO_RW_DIRECT since that command never has any data
attached to it.

This fixes SDIO wifi using the brcmfmac driver which reported the
following error without this change on a Netxeon S82 board using a
Meson8 (S802) SoC:
  brcmf_fw_alloc_request: using brcm/brcmfmac43362-sdio for chip
                          BCM43362/1
  brcmf_sdiod_ramrw: membytes transfer failed
  brcmf_sdio_download_code_file: error -110 on writing 219557 membytes
                                 at 0x00000000
  brcmf_sdio_download_firmware: dongle image file download failed

And with this change:
  brcmf_fw_alloc_request: using brcm/brcmfmac43362-sdio for chip
                          BCM43362/1
  brcmf_c_process_clm_blob: no clm_blob available (err=-2), device may
                            have limited channels available
  brcmf_c_preinit_dcmds: Firmware: BCM43362/1 wl0: Apr 22 2013 14:50:00
                         version 5.90.195.89.6 FWID 01-b30a427d

Fixes: e4bf1b0970 ("mmc: host: meson-mx-sdhc: new driver for the Amlogic Meson SDHC host")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20211219153442.463863-2-martin.blumenstingl@googlemail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-29 12:26:03 +01:00
Douglas Anderson
31ae403513 mmc: Set PROBE_PREFER_ASYNCHRONOUS for drivers that are newer than 5.4
This is like commit 3d3451124f3d ("mmc: sdhci-msm: Prefer asynchronous
probe") but applied to a whole pile of drivers.  This batch converts
the drivers that appeared to have been added after kernel 5.4.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Lars Povlsen <lars.povlsen@microchip.com>
Acked-by: Angelo Dureghello <angelo.dureghello@timesys.com>
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20200903162412.6.Ib121debfb18e5f923a3cd38fe9c36aa086c650c5@changeid
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2020-09-07 14:24:21 +02:00
Martin Blumenstingl
c70805dca1 mmc: meson-mx-sdhc: Fix manual RX FIFO flushing
For Meson8 and Meson8b SoCs the vendor driver follows the following
pattern:
- for eMMC and SD cards in .set_pdma it sets:
  pdma->rxfifo_manual_flush = 1;
- for SDIO cards in .set_pdma it sets:
  pdma->rxfifo_manual_flush = 0;
- before syncing the DMA read buffer is sets:
  pdma->rxfifo_manual_flush |= 0x02;

Set the second bit of MESON_SDHC_PDMA_RXFIFO_MANUAL_FLUSH without
clearing the first bit before syncing the DMA read buffer. This fixes a
problem where Meson8 and Meson8b SoCs would read random garbage from SD
cards. It is not clear why it worked for eMMC cards. This manifested in
the following errors when plugging in an SD card:
  unrecognised SCR structure version <random number>

Cc: Thomas Graichen <thomas.graichen@gmail.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20200517222907.1277787-1-martin.blumenstingl@googlemail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2020-05-28 11:22:15 +02:00
Martin Blumenstingl
67c7daec69 mmc: meson-mx-sdhc: Fix building with CONFIG_MMC_MESON_MX_SDHC=m
For an x86_64 allmodconfig build Stephen reports that building
meson-mx-sdhc-clkc.o warns that MODULE_LICENSE is missing and when
linking meson_mx_sdhc_register_clkc cannot be found.

Compile the MMC controller driver together with the build-in clock
controller driver into one module rather than using two separate
modules to fix these issues.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20200518060811.1499962-1-martin.blumenstingl@googlemail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2020-05-28 11:22:14 +02:00