On 6/1/2026 3:12 PM, Sam Day via B4 Relay wrote:
** Resending because I found new ways to dislike Proton Mail (it failed
the series midway due to "spamming". Sigh.). **
This patch series introduces support for ARMv7 Qualcomm SoCs, starting
with MSM8960/MSM8930/MSM8227.
An overview of the changes:
* serial_msm reintroduces the previous packed RX/TX software mode
operation, as this is compatible with all UARTDM versions (1.4 and
older). It's added alongside the newer single-char mode for 1.4.
* A timer driver is introduced for KPSS. I don't know if *all* ARMv7
qcom SoCs lack generic ARM CP15 debug timer support, but at least
MSM8960/MSM8930 do.
* mach-snapdragon board code is shuffled around a bit to build cleanly
on ARM64.
* prev_bl_data support is extended to ARM32 (which uses r2 for passing
FDT/ATAGS pointers, rather than r0)
* qcom_parse_memory is revised to support arm32 memory nodes (which are
1-cell rather than 2-cell).
* Basic ATAGS support is introduced, so that the memory info can be
used from previous bootloaders that do not understand FDTs at all.
* PS_HOLD sysreset and pinctrl-qcom needed some minor tweaks to handle
some nuances that challenge the current assumptions.
* A pinctrl driver is introduced for MSM8960.
* Initial MSM8960 GCC infra is introduced.
I tested this series on:
* Nokia Lumia 520 (msm8227). No working buttons yet as these are
exposed as GPIO-over-PMIC-over-SSBI (drivers will be proposed at a
later date).
* Samsung Galaxy Express GT-I8730 (msm8930). Volume rockers + home
button are working via the new pinctrl-msm8960 driver. Power
button not working yet (needs PMIC driver infra).
* I have no msm8960/apq8064 devices, looking for folks to test those.
To confirm there was no regressions with ARM64 and/or newer devices, I
also tested on:
* db410c (msm8916)
* google-sargo (sdm670)
Signed-off-by: Sam Day <[email protected]>
---
Sam Day (16):
serial: msm: UARTDM <1.4 support
timer: Qualcomm KPSS timer support
arm: save_prev_bl_data: ARM32 support
mach-snapdragon: qcom_parse_memory 32-bit support
mach-snapdragon: gate ARM64 features
mach-snapdragon: introduce ARCH_SNAPDRAGON_ARM32
configs: introduce qcom_armv7_defconfig
board: qualcomm: add MSM8960 debug UART config
sysreset: qcom-pshold: offset support
pinctrl: qcom: configurable GPIO offset/stride
pinctrl: qcom: introduce MSM8960 driver
mach-snapdragon: parse incoming ARM32 ATAGS
clk: qcom: MSM8960 GCC driver
clk: qcom: arch-agnostic pointer fmtstrings
serial: msm: wait for TX empty before reinit
button: remap phone HOMEPAGE button
arch/arm/Kconfig | 11 +-
arch/arm/lib/save_prev_bl_data.c | 49 ++++---
arch/arm/mach-snapdragon/Kconfig | 6 +
arch/arm/mach-snapdragon/board.c | 188 ++++++++++++++++++--------
arch/arm/mach-snapdragon/include/mach/gpio.h | 12 +-
board/qualcomm/debug-msm8960.config | 5 +
configs/qcom_armv7_defconfig | 61 +++++++++
drivers/button/Kconfig | 2 +-
drivers/button/button-uclass.c | 1 +
drivers/clk/qcom/Kconfig | 8 ++
drivers/clk/qcom/Makefile | 1 +
drivers/clk/qcom/clock-msm8960.c | 189 +++++++++++++++++++++++++++
drivers/clk/qcom/clock-qcom.c | 8 +-
drivers/gpio/msm_gpio.c | 2 +-
drivers/pinctrl/qcom/Kconfig | 9 ++
drivers/pinctrl/qcom/Makefile | 1 +
drivers/pinctrl/qcom/pinctrl-msm8960.c | 135 +++++++++++++++++++
drivers/pinctrl/qcom/pinctrl-qcom.c | 2 +-
drivers/serial/serial_msm.c | 142 +++++++++++++++++---
drivers/sysreset/sysreset_qcom-pshold.c | 9 +-
drivers/timer/Kconfig | 7 +
drivers/timer/Makefile | 1 +
drivers/timer/qcom-kpss-timer.c | 98 ++++++++++++++
23 files changed, 843 insertions(+), 104 deletions(-)
---
base-commit: 8d3ba3753bdb5068884196ff696cc48177bfdda5
change-id: 20260530-qcom-armv7-1486308a835c
Best regards,
This looks great! I have a Sony Xperia SP (MSM8960T) and would like to
test it.
Before I dive in, I need to clarify the build setup:
- For cross-compilation, should I use `CROSS_COMPILE=arm-none-eabi-`?
- Which defconfig is appropriate for the Xperia SP?
- Is the config generated with `make qcom_armv7_defconfig
qcom-phone.config`?
Would appreciate a quick pointer on the build workflow.
--
Thanks,
Antony K. S.
