linux-toradex.git/drivers/mmc, branch v6.19-rc2

mmc: sdhci-esdhc-imx: add alternate ARCH_S32 dependency to Kconfig

2025-12-17T13:14:51+00:00

MMC_SDHCI_ESDHC_IMX requires ARCH_MXC despite also being used on
ARCH_S32, which results in unmet dependencies when compiling strictly
for ARCH_S32. Resolve this by adding ARCH_S32 as an alternative to
ARCH_MXC in the driver's dependencies.

Fixes: 5c4f00627c9a ("mmc: sdhci-esdhc-imx: add NXP S32G2 support")
Cc: stable@bvger.kernel.org
Signed-off-by: Jared Kangas 
Reviewed-by: Haibo Chen 
Signed-off-by: Ulf Hansson

mmc: sdhci-of-arasan: Increase CD stable timeout to 2 seconds

2025-12-17T13:12:14+00:00

On Xilinx/AMD platforms, the CD stable bit take slightly longer than
one second(about an additional 100ms) to assert after a host
controller reset. Although no functional failure observed with the
existing one second delay but to ensure reliable initialization, increase
the CD stable timeout to 2 seconds.

Fixes: e251709aaddb ("mmc: sdhci-of-arasan: Ensure CD logic stabilization before power-up")
Cc: stable@vger.kernel.org
Signed-off-by: Sai Krishna Potthuri 
Acked-by: Adrian Hunter 
Signed-off-by: Ulf Hansson

Merge tag 'mmc-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

2025-12-04T22:10:16+00:00

Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Allow more host caps to be modified through debugfs
   - Skip to set the default 200mA SD current limit

  MMC host:
   - Convert a few more DT bindings to the DT schema
   - dw_mmc: Add Shawn Lin as co-maintainer for the dw_mmc drivers
   - dw_mmc-rockchip:
       - Add memory clock auto-gating support
       - Add support for the RK3506 variant
   - meson-mx-sdio:
       - Ignore disabled "mmc-slot" child-nodes
       - Refactoring and general code improvements
   - renesas_sdhi:
       - Enable bigger data ports where available
       - Manage reset in probe and during system-wide suspend/resume
   - sdhci-brcmstb:
       - Add support for the BCM72116 and BCM74371 variants
       - Save/restore registers during system-wide suspend/resume
   - sdhci-msm:
       - Add support for the sm8750 and the Kaanapali variants
       - Avoid early clock doubling during HS400 transition
   - sdhci-of-dwcmshc:
       - Add command queue support for Rockchip SOCs
       - Add support for the Eswin EIC7700 variant"

* tag 'mmc-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (40 commits)
  mmc: sdhci-of-dwcmshc: reduce CIT for better performance
  mmc: sdhci-of-dwcmshc: Disable internal clock auto gate for Rockchip SOCs
  mmc: sdhci-msm: Avoid early clock doubling during HS400 transition
  MAINTAINERS: Add Shawn Lin as co-maintainer for dw_mmc drivers
  mmc: sdhci-of-dwcmshc: Fix command queue support for RK3576
  mmc: renesas_sdhi: Add suspend/resume hooks
  mmc: renesas_sdhi: Switch to SYSTEM_SLEEP_PM_OPS()/RUNTIME_PM_OPS() and pm_ptr()
  mmc: renesas_sdhi: Deassert the reset signal on probe
  dt-bindings: mmc: am654: Simplify dma-coherent property
  mmc: meson-mx-sdio: Ignore disabled "mmc-slot" child-nodes
  mmc: meson-mx-sdio: Fix indentation in meson_mx_mmc_irq_thread()
  mmc: meson-mx-sdio: Use dev_err_probe() where appropriate
  mmc: meson-mx-sdio: Use devm_mmc_alloc_host() helper
  mmc: meson-mx-sdio: Refactor internal clock initialization
  mmc: meson-mx-sdio: Use devm_clk_get_enabled()
  mmc: meson-mx-sdio: Switch to regmap for register access
  mmc: core: add WQ_PERCPU to alloc_workqueue users
  mmc: dw_mmc-rockchip: Add memory clock auto-gating support
  mmc: omap: add WQ_PERCPU to alloc_workqueue users
  mmc: mtk-sd: replace use of system_wq with system_percpu_wq
  ...

Merge tag 'printk-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux

2025-12-03T20:42:36+00:00

Pull printk updates from Petr Mladek:

 - Allow creaing nbcon console drivers with an unsafe write_atomic()
   callback that can only be called by the final nbcon_atomic_flush_unsafe().
   Otherwise, the driver would rely on the kthread.

   It is going to be used as the-best-effort approach for an
   experimental nbcon netconsole driver, see

     https://lore.kernel.org/r/20251121-nbcon-v1-2-503d17b2b4af@debian.org

   Note that a safe .write_atomic() callback is supposed to work in NMI
   context. But some networking drivers are not safe even in IRQ
   context:

     https://lore.kernel.org/r/oc46gdpmmlly5o44obvmoatfqo5bhpgv7pabpvb6sjuqioymcg@gjsma3ghoz35

   In an ideal world, all networking drivers would be fixed first and
   the atomic flush would be blocked only in NMI context. But it brings
   the question how reliable networking drivers are when the system is
   in a bad state. They might block flushing more reliable serial
   consoles which are more suitable for serious debugging anyway.

 - Allow to use the last 4 bytes of the printk ring buffer.

 - Prevent queuing IRQ work and block printk kthreads when consoles are
   suspended. Otherwise, they create non-necessary churn or even block
   the suspend.

 - Release console_lock() between each record in the kthread used for
   legacy consoles on RT. It might significantly speed up the boot.

 - Release nbcon context between each record in the atomic flush. It
   prevents stalls of the related printk kthread after it has lost the
   ownership in the middle of a record

 - Add support for NBCON consoles into KDB

 - Add %ptsP modifier for printing struct timespec64 and use it where
   possible

 - Misc code clean up

* tag 'printk-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux: (48 commits)
  printk: Use console_is_usable on console_unblank
  arch: um: kmsg_dump: Use console_is_usable
  drivers: serial: kgdboc: Drop checks for CON_ENABLED and CON_BOOT
  lib/vsprintf: Unify FORMAT_STATE_NUM handlers
  printk: Avoid irq_work for printk_deferred() on suspend
  printk: Avoid scheduling irq_work on suspend
  printk: Allow printk_trigger_flush() to flush all types
  tracing: Switch to use %ptSp
  scsi: snic: Switch to use %ptSp
  scsi: fnic: Switch to use %ptSp
  s390/dasd: Switch to use %ptSp
  ptp: ocp: Switch to use %ptSp
  pps: Switch to use %ptSp
  PCI: epf-test: Switch to use %ptSp
  net: dsa: sja1105: Switch to use %ptSp
  mmc: mmc_test: Switch to use %ptSp
  media: av7110: Switch to use %ptSp
  ipmi: Switch to use %ptSp
  igb: Switch to use %ptSp
  e1000e: Switch to use %ptSp
  ...

mmc: sdhci-of-dwcmshc: reduce CIT for better performance

2025-11-26T10:47:05+00:00

CQHCI_SSC1.CIT indicates to the CQE the polling period to use for
periodic SEND_QUEUE_STATUS (CMD13) polling. Some eMMCs have only one
hardware queue, and CMD13 can only query one slot at a time for data
transmission, which cannot be processed in parallel. Modifying the
CMD13 query interval can increase the query frequency and improve
random write performance.

Signed-off-by: Shawn Lin 
Acked-by: Adrian Hunter 
Signed-off-by: Ulf Hansson

mmc: sdhci-of-dwcmshc: Disable internal clock auto gate for Rockchip SOCs

2025-11-26T10:45:27+00:00

Enabling CMDQ support can lead to random occurrences of the error log when
there are RPMB access and data flush executed:

"mmc2: Timeout waiting for hardware interrupt."

Enabling CMDQ and then issuing a DCMD as the final command before disabling
it causes the eMMC controller to auto-gate its internal clock. Chip simulation
shows this results in a state machine mismatch after CMDQ mode exit, triggering
data-timeout errors for all subsequent read and write operations.

Therefore, the auto-clock-gate function must be disabled whenever CMDQ is
enabled.

Signed-off-by: Shawn Lin 
Acked-by: Adrian Hunter 
Fixes: fda1e0af7c28 ("mmc: sdhci-of-dwcmshc: Add command queue support for rockchip SOCs")
Signed-off-by: Ulf Hansson

mmc: Merge branch fixes into next

2025-11-25T12:58:46+00:00

Merge the mmc fixes for v6.18-rc[n] into the next branch, to allow them to
get tested together with the new mmc changes that are targeted for v6.19.

Signed-off-by: Ulf Hansson

mmc: sdhci-of-dwcmshc: Promote the th1520 reset handling to ip level

2025-11-25T12:44:51+00:00

Commit 27e8fe0da3b7 ("mmc: sdhci-of-dwcmshc: Prevent stale command
interrupt handling") clears pending interrupts when resetting
host->pending_reset to ensure no pending stale interrupts after
sdhci_threaded_irq restores interrupts. But this fix is only added for
th1520 platforms, in fact per my test, this issue exists on all
dwcmshc users, such as cv1800b, sg2002, and synaptics platforms.

So promote the above reset handling from th1520 to ip level. And keep
reset handling on rk, sg2042 and bf3 as is, until it's confirmed that
the same issue exists on these platforms too.

Fixes: 017199c2849c ("mmc: sdhci-of-dwcmshc: Add support for Sophgo CV1800B and SG2002")
Signed-off-by: Jisheng Zhang 
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson

mmc: sdhci-msm: Avoid early clock doubling during HS400 transition

2025-11-25T12:39:46+00:00

According to the hardware programming guide, the clock frequency must
remain below 52MHz during the transition to HS400 mode.

However,in the current implementation, the timing is set to HS400 (a
DDR mode) before adjusting the clock. This causes the clock to double
prematurely to 104MHz during the transition phase, violating the
specification and potentially resulting in CRC errors or CMD timeouts.

This change ensures that clock doubling is avoided during intermediate
transitions and is applied only when the card requires a 200MHz clock
for HS400 operation.

Signed-off-by: Sarthak Garg 
Reviewed-by: Bjorn Andersson 
Acked-by: Adrian Hunter 
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson

mmc: sdhci-of-dwcmshc: Fix command queue support for RK3576

2025-11-25T12:37:21+00:00

When I added command queue engine (CQE) support for the Rockchip eMMC
controller, I missed that RK3576 has a separate platform data struct.
While things are working fine on RK3588 (I tested the ROCK 5B) and
the suspend issue is fixed on the RK3576 (I tested the Sige5), this
results in stability issues. By also adding the necessary hooks for
the RK3576 platform the following problems can be avoided:

[   15.606895] mmc0: running CQE recovery
[   15.616189] mmc0: running CQE recovery
[...]
[   25.911484] mmc0: running CQE recovery
[   25.926305] mmc0: running CQE recovery
[   25.927468] mmc0: running CQE recovery
[...]
[   26.255719] mmc0: running CQE recovery
[   26.257162] ------------[ cut here ]------------
[   26.257581] mmc0: cqhci: spurious TCN for tag 31
[   26.258034] WARNING: CPU: 0 PID: 0 at drivers/mmc/host/cqhci-core.c:796 cqhci_irq+0x440/0x68c
[   26.263786] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.18.0-rc6-gd984ebbf0d15 #1 PREEMPT
[   26.264561] Hardware name: ArmSoM Sige5 (DT)
[...]
[   26.272748] Call trace:
[   26.272964]  cqhci_irq+0x440/0x68c (P)
[   26.273296]  dwcmshc_cqe_irq_handler+0x54/0x88
[   26.273689]  sdhci_irq+0xbc/0x1200
[   26.273991]  __handle_irq_event_percpu+0x54/0x1d0
[...]

Note that the above problems do not necessarily happen with every boot.

Reported-by: Adrian Hunter 
Closes: https://lore.kernel.org/linux-rockchip/01949bc9-4873-498b-ac7d-f008393ccc4c@intel.com/
Fixes: fda1e0af7c28f ("mmc: sdhci-of-dwcmshc: Add command queue support for rockchip SOCs")
Signed-off-by: Sebastian Reichel 
Reviewed-by: Shawn Lin 
Signed-off-by: Ulf Hansson