Re: [PATCH v5 0/3] Retrieve information about DDR from SMEM

Bjorn Andersson <[email protected]> Thu, 30 Jul 2026 22:23:43 -0500

Newsgroups	gmane.comp.freedesktop.xorg.drivers.freedreno,gmane.linux.kernel,gmane.linux.ports.arm.msm,gmane.comp.video.dri.devel,gmane.linux.scsi,gmane.linux.ports.arm.kernel,gmane.linux.ports.arm.mediatek,gmane.linux.drivers.devicetree,gmane.linux.ports.riscv
Message-ID	<[email protected]>

On Mon, 27 Jul 2026 11:59:26 +0200, Konrad Dybcio wrote:
> SMEM allows the OS to retrieve information about the DDR memory.
> Among that information, is a semi-magic value called 'HBB', or Highest
> Bank address Bit, which multimedia drivers (for hardware like Adreno
> and MDSS) must retrieve in order to program the IP blocks correctly.
> 
> This series introduces an API to retrieve that value, uses it in the
> aforementioned programming sequences and exposes available DDR
> frequencies in debugfs (to e.g. pass to aoss_qmp debugfs). More
> information can be exposed in the future, as needed.
> 
> [...]

Applied, thanks!

[1/3] soc: qcom: smem: Use 'unsigned int' instead of 'unsigned'
      commit: 80350cdc5f7e2ddc6739987a78f04b9b7788e593
[2/3] soc: qcom: smem: Expose DDR data from SMEM
      commit: 1d234eeafc56af8c9af6eee857f41a4310615e78
[3/3] soc: qcom: ubwc: Get HBB from SMEM
      commit: 1b445022d1d0ec7431b6f8fe0054ae8ccf33d60a

Best regards,
-- 
Bjorn Andersson <[email protected]>