From 045016902bf7abeeb2a86fc9284c30dce228f055 Mon Sep 17 00:00:00 2001 From: Murali Karicheri Date: Tue, 13 Oct 2015 13:49:04 -0700 Subject: soc: ti: qmss: make acc queue support optional in the driver 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 Signed-off-by: Santosh Shilimkar --- Documentation/arm/keystone/knav-qmss.txt | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'Documentation/arm') diff --git a/Documentation/arm/keystone/knav-qmss.txt b/Documentation/arm/keystone/knav-qmss.txt index da34a5babfbe..fcdb9fd5f53a 100644 --- a/Documentation/arm/keystone/knav-qmss.txt +++ b/Documentation/arm/keystone/knav-qmss.txt @@ -48,3 +48,9 @@ in the file system and boot up the kernel. User would see "firmware file ks2_qmss_pdsp_acc48.bin downloaded for PDSP" in the boot up log if loading of firmware to PDSP is successful. + +Use of accumulated queues requires the firmware image to be present in the +file system. The driver doesn't acc queues to the supported queue range if +PDSP is not running in the SoC. The API call fails if there is a queue open +request to an acc queue and PDSP is not running. So make sure to copy firmware +to file system before using these queue types. -- cgit v1.2.3