kernel/git/stable/linux.git/drivers/pmdomain/imx, branch linux-7.2.y

pmdomain: imx: Fix i.MX8MP VC8000E power up sequence

2026-07-08T15:11:50+00:00

Per errata[1]: 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) Add a bool variable is_errata_err050531 in 'struct imx8m_blk_ctrl_domain_data' to represent whether the workaround is needed. If is_errata_err050531 is true, first clear the clk before powering up gpc, then enable the clk after powering up gpc. [1] https://www.nxp.com/webapp/Download?colCode=IMX8MP_1P33A Fixes: a1a5f15f7f6cb ("soc: imx: imx8m-blk-ctrl: add i.MX8MP VPU blk ctrl") Cc: stable@vger.kernel.org Signed-off-by: Peng Fan Reviewed-by: Frank Li Signed-off-by: Ulf Hansson

pmdomain: imx: Fix i.MX8MP power notifier

2026-07-08T15:11:50+00:00

Using imx8mm_vpu_power_notifier() for i.MX8MP is wrong, as it ungates the VPU clocks to provide the ADB clock, which is necessary on i.MX8MM, but on i.MX8MP there is a separate gate (bit 3) for the NoC. So add imx8mp_vpu_power_notifier() for i.MX8MP. Fixes: a1a5f15f7f6cb ("soc: imx: imx8m-blk-ctrl: add i.MX8MP VPU blk ctrl") Cc: stable@vger.kernel.org Reviewed-by: Frank Li Signed-off-by: Peng Fan Signed-off-by: Ulf Hansson

pmdomain: imx93-blk-ctrl: Extract PHY as shared domain for DSI/CSI

2026-07-08T15:09:25+00:00

The MIPI DSI and CSI domains share control bits for clock and reset, which can lead to incorrect behavior if one domain disables the shared resource while the other is still active. To fix the issue, introduce a shared MIPI PHY power domain to own the common resources and make DSI and CSI its subdomains. This ensures the shared bits are properly managed and not disabled while still in use. Fixes: e9aa77d413c9 ("soc: imx: add i.MX93 media blk ctrl driver") Cc: stable@vger.kernel.org Signed-off-by: Guoniu Zhou Reviewed-by: Frank Li Reviewed-by: Peng Fan Signed-off-by: Ulf Hansson

Replace by more specific (c files)

2026-07-03T05:38:17+00:00

Replace the #include of by the more specific where applicable. For most cases the include can be dropped completely, only a few drivers need one or two headers added. Acked-by: Danilo Krummrich Acked-by: Takashi Sakamoto Acked-by: Bjorn Helgaas Link: https://patch.msgid.link/1a3f2007c5c5dcf555c09a4035ce3ae8ef1b6c49.1782808461.git.u.kleine-koenig@baylibre.com Signed-off-by: Uwe Kleine-König (The Capable Hub)

pmdomain: imx: fix OF node refcount

2026-06-03T09:49:37+00:00

for_each_child_of_node_scoped() decrements the reference count of the nod after each iteration. Assigning it without incrementing the refcount to a dynamically allocated platform device will result in a double put in platform_device_release(). Add the missing call to of_node_get(). Cc: stable@vger.kernel.org Fixes: 3e4d109ee8fc ("pmdomain: imx: gpc: Simplify with scoped for each OF child loop") Signed-off-by: Bartosz Golaszewski Signed-off-by: Ulf Hansson

pmdomain: Merge branch fixes into next

2026-04-01T11:34:40+00:00

Merge the pmdomain fixes for v7.0-rc[n] into the next branch, to allow them to get tested together with the pmdomain changes that are targeted for the next release. Signed-off-by: Ulf Hansson

pmdomain: imx: scu-pd: Fix device_node reference leak during ->probe()

2026-04-01T11:07:31+00:00

When calling of_parse_phandle_with_args(), the caller is responsible to call of_node_put() to release the reference of device node. In imx_sc_pd_get_console_rsrc(), it does not release the reference. Fixes: 893cfb99734f ("firmware: imx: scu-pd: do not power off console domain") Signed-off-by: Felix Gu Reviewed-by: Peng Fan Signed-off-by: Ulf Hansson

pmdomain: imx93-blk-ctrl: add support for optional subnodes

2026-04-01T11:07:31+00:00

This particular block can have DT subnodes describing the LVDS LDB, MIPI DSI and parallel DPI bridge. Scan for possible sub-devices within the driver, instead of misusing the simple-bus to perform the scan. Reviewed-by: Alexander Stein Reviewed-by: Frank Li Signed-off-by: Marco Felsch Signed-off-by: Ulf Hansson

pmdomain: imx93-blk-ctrl: convert to devm_* only

2026-04-01T11:07:31+00:00

Convert the driver to devm_ APIs only by making use of devm_add_action_or_reset() and devm_pm_runtime_enable() to simplify the probe error path and to drop the .remove() callback. This also ensures that the device release order equals the device probe error path order. Furthermore drop the dev_set_drvdata() usage since the only user was the .remove() callback which is removed by this commit. Reviewed-by: Frank Li Signed-off-by: Marco Felsch Signed-off-by: Ulf Hansson

pmdomain: imx93-blk-ctrl: cleanup error path

2026-04-01T11:07:31+00:00

Call dev_err_probe() directly during return to make the code more compact. Reviewed-by: Alexander Stein Reviewed-by: Frank Li Signed-off-by: Marco Felsch Signed-off-by: Ulf Hansson