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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.c | |
| parent | 7d132055814ef17a6c7b69f342244c410a5e000f (diff) | |
| download | talos-op-linux-cd8abed1da91a3250aa4b3857479613a2b446f84.tar.gz talos-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.c')
| -rw-r--r-- | arch/arm/mach-omap2/powerdomain.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c index 86babd740d41..e233dfcbc186 100644 --- a/arch/arm/mach-omap2/powerdomain.c +++ b/arch/arm/mach-omap2/powerdomain.c @@ -102,6 +102,10 @@ static int _pwrdm_register(struct powerdomain *pwrdm) if (_pwrdm_lookup(pwrdm->name)) return -EEXIST; + if (arch_pwrdm && arch_pwrdm->pwrdm_has_voltdm) + if (!arch_pwrdm->pwrdm_has_voltdm()) + goto skip_voltdm; + voltdm = voltdm_lookup(pwrdm->voltdm.name); if (!voltdm) { pr_err("powerdomain: %s: voltagedomain %s does not exist\n", @@ -111,6 +115,7 @@ static int _pwrdm_register(struct powerdomain *pwrdm) pwrdm->voltdm.ptr = voltdm; INIT_LIST_HEAD(&pwrdm->voltdm_node); voltdm_add_pwrdm(voltdm, pwrdm); +skip_voltdm: spin_lock_init(&pwrdm->_lock); list_add(&pwrdm->node, &pwrdm_list); |
