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crypto: caam - always select job ring via RSR on i.MX8MQ

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Per feedback from NXP tech support the way to use register based
service interface on i.MX8MQ is to follow the same set of steps
outlined for the case when virtualization is enabled, regardless if it
is. Current version of SRM for i.MX8MQ speaks of DECO DID_MS and DECO
DID_LS registers, but apparently those are not implemented, so the
case when SCFGR[VIRT_EN]=0 should be handled the same as the case when
SCFGR[VIRT_EN]=1

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Chris Spencer <christopher.spencer@sea.co.uk>
Cc: Cory Tusar <cory.tusar@zii.aero>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Horia Geantă <horia.geanta@nxp.com>
Cc: Aymen Sghaier <aymen.sghaier@nxp.com>
Cc: Leonard Crestez <leonard.crestez@nxp.com>
Cc: linux-crypto@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Andrey Smirnov 2019-08-20 13:24:00 -07:00 committed by Herbert Xu
parent a1cf573ee9
commit a672705597
1 changed files with 6 additions and 1 deletions
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7
drivers/crypto/caam/ctrl.c
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@ -97,7 +97,12 @@ static inline int run_descriptor_deco0(struct device *ctrldev, u32 *desc,
int i;
if (ctrlpriv->virt_en == 1) {
if (ctrlpriv->virt_en == 1 ||
/*
* Apparently on i.MX8MQ it doesn't matter if virt_en == 1
* and the following steps should be performed regardless
*/
of_machine_is_compatible("fsl,imx8mq")) {
clrsetbits_32(&ctrl->deco_rsr, 0, DECORSR_JR0);
while (!(rd_reg32(&ctrl->deco_rsr) & DECORSR_VALID) &&