Re: [PATCH v3 0/3] Add preliminary support for MSM8917

[Biswapriyo Nath <nathbappai@gmail.com>]

On Wed, 16 Sep 2026 04:16:01 +0000 Reza Kurniawan <imkyufie@gmail.com> wrote:

> This patch series adds preliminary support for booting Qualcomm MSM8917.
> 
> Specifically, it includes carving out reserved memory regions (no-map) at
> early init to avoid security violations, A Global Clock Controller (GCC)
> driver providing essential clocks, resets, and GDSCs needed for U-Boot and
> a pinctrl driver to configure pin parameters and manage GPIOs.
> 
> This patch series depends on the GDSC flags series by Luca Weiss and
> Alexey Minnekhanov [1], specifically patch 4/4 ("clk/qcom: Treat different
> GDSCs differently") [2]. On MSM8917, MDSS_GDSC does not have POLL_CFG_GDSCR
> and requires polling the GDSCR register directly instead of CFG_GDSCR,
> which is addressed by [2].
> 
> Changes in v3:
> - Drop "clk: qcom: Add an option to poll for GDSCR GDSC_POWER_ON bit"
>   in favor of Alexey Minnekhanov's series [1] / [2].
> - Update MDSS_GDSC in clock-msm8917 to comply with the new 'flags'
>   member in struct qcom_power_map introduced by [2].
> 
> Changes in v2:
> - Change license to GPL-2.0-only
> - Mention the source of the ported code
> - Add error check for out-of-range pin selector
> - Use macros for RCGR address constants
> 
> v2: https://lore.kernel.org/u-boot/20260912072619.244101-2-imkyufie@gmail.com
> v1: https://lore.kernel.org/u-boot/20260910095339.110427-1-imkyufie@gmail.com
> 
> 1: https://lore.kernel.org/u-boot/20260715-gdsc-flags-v2-0-27704470a24c@fairphone.com
> 2: https://lore.kernel.org/u-boot/20260715-gdsc-flags-v2-4-27704470a24c@fairphone.com
> 
> ---
> Reza Kurniawan (3):
>       mach-snapdragon: Carve out reserved memory at init for MSM8917
>       clk: qcom: Add Global Clock Controller (GCC) driver for MSM8917
>       pinctrl: qcom: Add pinctrl driver for MSM8917
> 
>  arch/arm/mach-snapdragon/mem_map.c     |   3 +-
>  configs/qcom_defconfig                 |   1 +
>  drivers/clk/qcom/Kconfig               |   8 +
>  drivers/clk/qcom/Makefile              |   1 +
>  drivers/clk/qcom/clock-msm8917.c       | 210 +++++++++++
>  drivers/pinctrl/qcom/Kconfig           |   8 +
>  drivers/pinctrl/qcom/Makefile          |   1 +
>  drivers/pinctrl/qcom/pinctrl-msm8917.c | 645 +++++++++++++++++++++++++++++++++
>  8 files changed, 876 insertions(+), 1 deletion(-)
> ---
> base-commit: d27c992cebb95bd903d09f3d1da55032a7a145da
> change-id: 20260915-msm8917-support-e56f0d21881b
> prerequisite-message-id: <20260715-gdsc-flags-v2-0-27704470a24c@fairphone.com>
> prerequisite-patch-id: a1b270485786a326cb40fda882935fcc0fbf3bba
> prerequisite-patch-id: 1d4a1450016d914394cf6a7e24ec9e5bc12fe80a
> prerequisite-patch-id: 568826d73bd992c6ff16681ad33e6891e25af5f5
> prerequisite-patch-id: bad5df259c02085a5aa51d130459ae1eecd0f638
> 
> Best regards,
> --  
> Reza Kurniawan <imkyufie@gmail.com>
> 
> 

I have tested all the patches with msm8937 Xiaomi Redmi 3S (land) phone.
U-Boot can boot Linux and fastboot, USB serial console, SD card work too.

Tested-by: Biswapriyo Nath <nathbappai@gmail.com>

Thanks <3