Re: [PATCH v4 0/2] pmdomain: imx: Fix i.MX8MP VC8000E power up sequence

[Ulf Hansson]

On Wed, Jun 10, 2026 at 3:22 PM Peng Fan (OSS) <peng.fan@xxxxxxxxxxx> wrote:
>
> There is an errata for i.MX8MP VC8000E:
>     ERR050531: VPU_NOC power down handshake may hang during VC8000E/VPUMIX
>     power up/down cycling.
>     Description: VC8000E reset de-assertion edge and AXI clock may have a
>     timing issue.
>     Workaround: Set bit2 (vc8000e_clk_en) of BLK_CLK_EN_CSR to 0 to gate off
>     both AXI clock and VC8000E clock sent to VC8000E and AXI clock sent to
>     VPU_NOC m_v_2 interface during VC8000E power up(VC8000E reset is
>     de-asserted by HW)
>
> This patchset is to fix the errata. More info could be found in each
> patch commit.
>
> Sorry for sending v4 at 7.1-rc7, no rush for 7.1.
>
> Signed-off-by: Peng Fan <peng.fan@xxxxxxx>

The v4 series applied for next, thanks!

Kind regards
Uffe


> ---
> Changes in v4:
> - Add R-b
> - Set is_errata_err050531 to true for vc8000e
> - Link to v3: https://lore.kernel.org/r/20260409-imx8mp-vc8000e-pm-v3-0-3e023eaa245b@xxxxxxx
>
> Changes in v3:
> - Separate power up notifier fix into patch 1
> - Link to v2: https://lore.kernel.org/r/20260228-imx8mp-vc8000e-pm-v2-1-fd255a0d5958@xxxxxxx
>
> Changes in v2:
> - Add errata link in commit message
> - Add comment for is_errata_err050531
> - Link to v1: https://lore.kernel.org/r/20260128-imx8mp-vc8000e-pm-v1-1-6c171451c732@xxxxxxx
>
> ---
> Peng Fan (2):
>       pmdomain: imx: Fix i.MX8MP power notifier
>       pmdomain: imx: Fix i.MX8MP VC8000E power up sequence
>
>  drivers/pmdomain/imx/imx8m-blk-ctrl.c | 46 +++++++++++++++++++++++++++++++++--
>  1 file changed, 44 insertions(+), 2 deletions(-)
> ---
> base-commit: 49e02880ec0a8c378e811bc9d85da188d7c6204c
> change-id: 20260610-b4-imx8mp-vc8000e-pm-v4-1-a978b40c59d0
>
> Best regards,
> --
> Peng Fan <peng.fan@xxxxxxx>
>