[v5,0/4] arm64: meson: add support for A1 Power Domains
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Message ID 1573532930-39505-1-git-send-email-jianxin.pan@amlogic.com
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  • arm64: meson: add support for A1 Power Domains
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Jianxin Pan Nov. 12, 2019, 4:28 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.

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/1568895064-4116-1-git-send-email-jianxin.pan@amlogic.com
[1]  https://lore.kernel.org/linux-amlogic/1570695678-42623-1-git-send-email-jianxin.pan@amlogic.com
[2]  https://lore.kernel.org/linux-amlogic/1571391167-79679-1-git-send-email-jianxin.pan@amlogic.com
[3]  https://lore.kernel.org/linux-amlogic/1572868028-73076-1-git-send-email-jianxin.pan@amlogic.com

Jianxin Pan (4):
  dt-bindings: power: add Amlogic secure power domains bindings
  firmware: meson_sm: Add secure power domain support
  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     |  37 ++++
 arch/arm64/boot/dts/amlogic/meson-a1.dtsi          |   7 +
 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, 298 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 Jan. 13, 2020, 11:40 p.m. UTC | #1
Jianxin Pan <jianxin.pan@amlogic.com> 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.
>
> Changes since v4 at [3]:                                                         
>  - add SM_A1_ prefix for PWRC_SET/GET
>  - rename variable and update comments

Thanks for those updates

After the bindings issues are worked out, this is ready for merge.

Kevin