From: Peng Fan <peng.fan@xxxxxxx>
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
Documentation: bindings: clk: 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 | 311 ++++++++++++++++++
drivers/soc/imx/blk-ctl.h | 85 +++++
include/dt-bindings/power/imx8mm-power.h | 13 +
6 files changed, 615 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
