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* ARM: dts: keystone: k2l: fix kernel crash when clk_ignore_unused is not in ↵Murali Karicheri2015-11-231-18/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | bootargs Currently kernel crash randomly when K2L EVM is booted without clk_ignore_unused in the bootargs. This workaround is not needed on other K2 devices such as K2HK and K2E and with this fix, we can remove the workaround altogether. netcp driver on K2L uses linked ram on OSR (On chip Static RAM) and requires the clock to this peripheral enabled for proper functioning. This is the reason for the kernel crash. So add the clock node to fix this issue. While at it, remove the workaround documentation as well. With the fix applied, clk_summary dump shows the clock to OSR enabled. cat /sys/kernel/debug/clk/clk_summary ------cut-------------- tcp3d-1 0 0 399360000 0 0 tcp3d-0 0 0 399360000 0 0 osr 1 1 399360000 0 0 fftc-0 0 0 399360000 0 0 -----cut---------------- Signed-off-by: Murali Karicheri <m-karicheri2@ti.com> Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>
* soc: ti: qmss: make acc queue support optional in the driverMurali Karicheri2015-10-131-0/+6
| | | | | | | | | | | acc channels are available only if accumulator PDSP is loaded and running in the SoC. As this requires firmware and user may not have firmware in the file system, make the accumulator queue support available in qmss driver optional. To use accumulator queus user needs to add firmware to the file system and boot up kernel. Signed-off-by: Murali Karicheri <m-karicheri2@ti.com> Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>
* soc: ti: add firmware file name as part of the driverMurali Karicheri2015-10-131-0/+26
| | | | | | | | | | | | | | | | | | | | | Currently firmware file name is included in the DTS. This is not scalable as user has to change the DTS if they need upgrade to a new firmware. Instead, add the firmware file name in the driver itself. As long as there is no API change, new firmware upgrade is easy and require no driver change. User is expected to copy the firmware image to the file system and add a sym link to the new firmware for doing an upgrade. Driver add a array of firmware file names to search for the available firmware blobs. This scheme also prepare the driver for future changes to API if ever happens. In such case it is assumed that driver needs to change to accommodate the new firmware and new firmware file name will get added to the array. Also update the DT document to remove the firmware attribute and add description about firmware in the driver documentation. Signed-off-by: Murali Karicheri <m-karicheri2@ti.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>
* Documentation: dt: soc: Add description for knav qmss driverMurali Karicheri2015-10-131-0/+24
| | | | | | | | Add documentation for knav qmss driver. Signed-off-by: Murali Karicheri <m-karicheri2@ti.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>
* ARM: keystone: add documentation for SoCs and EVMsMurali Karicheri2015-08-061-0/+73
Currently there is no general documentation on Keystone SoCs in the Linux Documentation folder of the source tree. This patch adds some essential documentation with links to help users of Keystone Linux and also provide links to existing documents where necessary. Signed-off-by: Murali Karicheri <m-karicheri2@ti.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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