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| author | Rajendra Nayak <rnayak@ti.com> | 2013-06-17 18:46:22 +0530 |
|---|---|---|
| committer | Kevin Hilman <khilman@linaro.org> | 2013-06-17 07:25:14 -0700 |
| commit | cd8abed1da91a3250aa4b3857479613a2b446f84 (patch) | |
| tree | 68e04d74a2d89be8145016a2e103cf4f87b6f89d /arch/arm/mach-omap2/powerdomain.h | |
| parent | 7d132055814ef17a6c7b69f342244c410a5e000f (diff) | |
| download | blackbird-op-linux-cd8abed1da91a3250aa4b3857479613a2b446f84.tar.gz blackbird-op-linux-cd8abed1da91a3250aa4b3857479613a2b446f84.zip | |
ARM: OMAP2+: Powerdomain: Remove the need to always have a voltdm associated to a pwrdm
The powerdomain framework currently expects all powerdomains to be associated with
a corresponding voltagedomain. For some SoCs' (like the already existing AM33xx
family, or for the upcoming AM437x and DRA7 SoCs') which
do not have a Voltage controller/Voltage Processor (neither the SR I2C
bus to communicate with the PMIC) there is no need for a Powerdomain to have
a voltage domain association since there is no auto-scaling of voltages possible
using the voltage FSM.
Extend the arch operations to add an api which the powerdomain core can
then use to identify if a voltdm lookup and association for a powerdomain
is really needed.
Acked-by: Nishanth Menon <nm@ti.com>
Acked-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Afzal Mohammed <afzal@ti.com> # am335x evm
Signed-off-by: Kevin Hilman <khilman@linaro.org>
Diffstat (limited to 'arch/arm/mach-omap2/powerdomain.h')
| -rw-r--r-- | arch/arm/mach-omap2/powerdomain.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/powerdomain.h b/arch/arm/mach-omap2/powerdomain.h index 140c36074fed..9701ad5778b9 100644 --- a/arch/arm/mach-omap2/powerdomain.h +++ b/arch/arm/mach-omap2/powerdomain.h @@ -166,6 +166,7 @@ struct powerdomain { * @pwrdm_disable_hdwr_sar: Disable Hardware Save-Restore feature for a pd * @pwrdm_set_lowpwrstchange: Enable pd transitions from a shallow to deep sleep * @pwrdm_wait_transition: Wait for a pd state transition to complete + * @pwrdm_has_voltdm: Check if a voltdm association is needed * * Regarding @pwrdm_set_lowpwrstchange: On the OMAP2 and 3-family * chips, a powerdomain's power state is not allowed to directly @@ -196,6 +197,7 @@ struct pwrdm_ops { int (*pwrdm_disable_hdwr_sar)(struct powerdomain *pwrdm); int (*pwrdm_set_lowpwrstchange)(struct powerdomain *pwrdm); int (*pwrdm_wait_transition)(struct powerdomain *pwrdm); + int (*pwrdm_has_voltdm)(void); }; int pwrdm_register_platform_funcs(struct pwrdm_ops *custom_funcs); |
