From: Peng Fan <peng.fan@xxxxxxx> V7: patch 2: update patch title per Shawn Patch 3: Addressed several comments from Shawn V6: Thanks for Adam's report on V5. Resolve the error message dump, it is the child device reuse the parent device node and matches the parent driver. Filled the remove function for child device. A diff dts file for upstream: https://gist.github.com/MrVan/d73888d8273c43ea4a3b28fa668ca1d0 V5: Rework the blk-ctl driver to let sub-PGC use blk-ctl as parent power domain to fix the potential handshake issue. I still keep R-b/A-b tag for Patch 1,2,4, since very minor changes I only drop R-b tag for Patch 3, since it has big change. An example, the pgc_mipi not take pgc_dispmix as parent: pgc_dispmix: power-domain@10 { #power-domain-cells = <0>; reg = <IMX8MM_POWER_DOMAIN_DISPMIX>; clocks = <&clk IMX8MM_CLK_DISP_ROOT>, <&clk IMX8MM_CLK_DISP_AXI_ROOT>, <&clk IMX8MM_CLK_DISP_APB_ROOT>; }; pgc_mipi: power-domain@11 { #power-domain-cells = <0>; reg = <IMX8MM_POWER_DOMAIN_MIPI>; power-domains = <&dispmix_blk_ctl IMX8MM_BLK_CTL_PD_DISPMIX_BUS>; }; dispmix_blk_ctl: clock-controller@32e28000 { compatible = "fsl,imx8mm-dispmix-blk-ctl", "syscon"; reg = <0x32e28000 0x100>; #power-domain-cells = <1>; power-domains = <&pgc_dispmix>, <&pgc_mipi>; power-domain-names = "dispmix", "mipi"; clocks = <&clk IMX8MM_CLK_DISP_ROOT>, <&clk IMX8MM_CLK_DISP_AXI_ROOT>, <&clk IMX8MM_CLK_DISP_APB_ROOT>; }; V4: Add R-b tag Typo fix Update the power domain macro names Per Abel and Frieder V3: Add explaination for not listing items in patch 2 commit log Per Rob. Addressed comments from Lucas and Frieder on patch [3,4]. A few comments from Jacky was ignored, because following gpcv2 coding style. V2: Fix yaml check failure. Previously there is an effort from Abel that take BLK-CTL as clock provider, but it turns out that there is A/B lock issue and we are not able resolve that. Per discuss with Lucas and Jacky, we made an agreement that take BLK-CTL as a power domain provider and use GPC's domain as parent, the consumer node take BLK-CTL as power domain input. This patchset has been tested on i.MX8MM EVK board, but one hack is not included in the patchset is that the DISPMIX BLK-CTL MIPI_M/S_RESET not implemented. Per Lucas, we will finally have a MIPI DPHY driver, so fine to leave it. Thanks for Lucas's suggestion, Frieder Schrempf for collecting all the patches, Abel's previous BLK-CTL work, Jacky Bai on help debug issues. Peng Fan (4): dt-bindings: power: Add defines for i.MX8MM BLK-CTL power domains dt-bindings: soc: imx: Add bindings for i.MX BLK_CTL soc: imx: Add generic blk-ctl driver soc: imx: Add blk-ctl driver for i.MX8MM .../bindings/soc/imx/fsl,imx-blk-ctl.yaml | 66 ++++ drivers/soc/imx/Makefile | 2 +- drivers/soc/imx/blk-ctl-imx8mm.c | 139 ++++++++ drivers/soc/imx/blk-ctl.c | 325 ++++++++++++++++++ drivers/soc/imx/blk-ctl.h | 85 +++++ include/dt-bindings/power/imx8mm-power.h | 13 + 6 files changed, 629 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/soc/imx/fsl,imx-blk-ctl.yaml create mode 100644 drivers/soc/imx/blk-ctl-imx8mm.c create mode 100644 drivers/soc/imx/blk-ctl.c create mode 100644 drivers/soc/imx/blk-ctl.h -- 2.30.0
