[v6,0/4] arm64: meson: add support for A1 Power Domains

Message

Jianxin Pan Jan. 15, 2020, 11:30 a.m. UTC

This patchset introduces a "Secure Power Doamin Controller". In A1/C1, power
controller registers such as PWRCTRL_FOCRSTN, PWRCTRL_PWR_OFF, PWRCTRL_MEM_PD
and PWRCTRL_ISO_EN, are in the secure domain, and should be accessed from ATF
by smc.

The secure-pwrc will not be probed before the secure watchdog patchset is merged 
at [6], which adds of_platform_default_populate() in meson_sm_probe(). 

Changes since v5 at [4]:                                                         
 - Move sec-pwrc to child node of secure-monitor according to Rob's suggestion
   at [5]

Changes since v4 at [3]:                                                         
 - add SM_A1_ prefix for PWRC_SET/GET
 - rename variable and update comments

Changes since v3 at [2]:                                                         
 - remove phandle to secure-monitor node

Changes since v2 at [1]:
- update domain id
- include dt-bindings in dts

Changes since v1 at [0]:
- use APIs from sm driver
- rename pwrc_secure_get_power as Kevin suggested
- add comments for always on domains
- replace arch_initcall_sync with builtin_platform_driver
- fix coding style

[0]  https://lore.kernel.org/linux-amlogic/[e-mail]
[1]  https://lore.kernel.org/linux-amlogic/[e-mail]
[2]  https://lore.kernel.org/linux-amlogic/[e-mail]
[3]  https://lore.kernel.org/linux-amlogic/[e-mail]
[4]  https://lore.kernel.org/linux-amlogic/[e-mail]
[5]  https://lore.kernel.org/linux-amlogic/[e-mail]/
[6]  https://lore.kernel.org/linux-amlogic/[e-mail]

Jianxin Pan (4):
  firmware: meson_sm: Add secure power domain support
  dt-bindings: power: add Amlogic secure power domains bindings
  soc: amlogic: Add support for Secure power domains controller
  arm64: dts: meson: a1: add secure power domain controller

 .../bindings/power/amlogic,meson-sec-pwrc.yaml     |  40 ++++
 arch/arm64/boot/dts/amlogic/meson-a1.dtsi          |   6 +
 drivers/firmware/meson/meson_sm.c                  |   2 +
 drivers/soc/amlogic/Kconfig                        |  13 ++
 drivers/soc/amlogic/Makefile                       |   1 +
 drivers/soc/amlogic/meson-secure-pwrc.c            | 204 +++++++++++++++++++++
 include/dt-bindings/power/meson-a1-power.h         |  32 ++++
 include/linux/firmware/meson/meson_sm.h            |   2 +
 8 files changed, 300 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/power/amlogic,meson-sec-pwrc.yaml
 create mode 100644 drivers/soc/amlogic/meson-secure-pwrc.c
 create mode 100644 include/dt-bindings/power/meson-a1-power.h

Comments

Kevin Hilman Feb. 14, 2020, 7:14 p.m. UTC | #1

Jianxin Pan <[e-mail]> writes:

> This patchset introduces a "Secure Power Doamin Controller". In A1/C1, power
> controller registers such as PWRCTRL_FOCRSTN, PWRCTRL_PWR_OFF, PWRCTRL_MEM_PD
> and PWRCTRL_ISO_EN, are in the secure domain, and should be accessed from ATF
> by smc.

Series queued for v5.7 with Rob's ack on the DT bindings.

Thanks,

Kevin

[e-mail] Feb. 14, 2020, 10:41 p.m. UTC | #2

Hello:

This series was applied to khilman/linux-amlogic.git (refs/heads/for-next).

On Wed, 15 Jan 2020 19:30:27 +0800 you wrote:
> This patchset introduces a "Secure Power Doamin Controller". In A1/C1, power
> controller registers such as PWRCTRL_FOCRSTN, PWRCTRL_PWR_OFF, PWRCTRL_MEM_PD
> and PWRCTRL_ISO_EN, are in the secure domain, and should be accessed from ATF
> by smc.
> 
> The secure-pwrc will not be probed before the secure watchdog patchset is merged
> at [6], which adds of_platform_default_populate() in meson_sm_probe().
> 
> [...]


Here is a summary with links:
  - [v6,1/4] firmware: meson_sm: Add secure power domain support
    https://git.kernel.org/khilman/linux-amlogic/c/fe98d0ff5d5c43ee179e801275bb37641d398c6e
  - [v6,2/4] dt-bindings: power: add Amlogic secure power domains bindings
    https://git.kernel.org/khilman/linux-amlogic/c/165b5fb294e878f00015b7beb91cb00e36e4f8b8
  - [v6,3/4] soc: amlogic: Add support for Secure power domains controller
    https://git.kernel.org/khilman/linux-amlogic/c/b3dde5013e13d44799b3477cd0bf0c9ad34fe5e9
  - [v6,4/4] arm64: dts: meson: a1: add secure power domain controller
    https://git.kernel.org/khilman/linux-amlogic/c/86e00420426cf6b040e71de5d9aa48c371e9b3b7

You are awesome, thank you!