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H A D | arche-platform.c | fd60ac58 Fri Feb 12 14:34:17 CST 2016 Vaibhav Hiremath <vaibhav.hiremath@linaro.org> greybus: arche-platform: Fix boot, poweroff and fw_flashing seq with APBs
Now SVC driver has an access to APBs operational functions (coldboot, standby_boot, fw_flashing and poweroff), SVC driver can control APB's as per below rules,
- If SVC goes down (poweroff state), it will also power off APBs and vice a versa for all operational states. - On boot, SVC will probe/populate APB device, but will not coldboot it. APBs will coldboot only after handshaking with SVC over wake/detect line. Note that, both APBs share same wake/detect line.
So from user/developer perspective, it is highly recommended that they should use arche-platform interfaces, instead of individual apb interface,
# echo [off/active/standby/fw_flashing] > /sys/devices/arche_platform.*/state
Note: 'standby' mode is not supported as of now.
Testing Done: Testd on EVT1.2 and DB3.5 platform.
Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> fd60ac58 Fri Feb 12 14:34:17 CST 2016 Vaibhav Hiremath <vaibhav.hiremath@linaro.org> greybus: arche-platform: Fix boot, poweroff and fw_flashing seq with APBs Now SVC driver has an access to APBs operational functions (coldboot, standby_boot, fw_flashing and poweroff), SVC driver can control APB's as per below rules, - If SVC goes down (poweroff state), it will also power off APBs and vice a versa for all operational states. - On boot, SVC will probe/populate APB device, but will not coldboot it. APBs will coldboot only after handshaking with SVC over wake/detect line. Note that, both APBs share same wake/detect line. So from user/developer perspective, it is highly recommended that they should use arche-platform interfaces, instead of individual apb interface, # echo [off/active/standby/fw_flashing] > /sys/devices/arche_platform.*/state Note: 'standby' mode is not supported as of now. Testing Done: Testd on EVT1.2 and DB3.5 platform. Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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