Re: [PATCH v5 0/3] Retrieve information about DDR from SMEM
Bjorn Andersson <[email protected]>
| Newsgroups | org.freedesktop.lists.dri-devel,org.infradead.lists.linux-arm-kernel,org.infradead.lists.linux-mediatek,org.infradead.lists.linux-riscv,org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-hardening,org.kernel.vger.linux-kernel,org.kernel.vger.linux-scsi |
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| 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]>