layerscape: add patches-5.4

Add patches for linux-5.4. The patches are from NXP LSDK-20.04 release
which was tagged LSDK-20.04-V5.4.
https://source.codeaurora.org/external/qoriq/qoriq-components/linux/

For boards LS1021A-IOT, and Traverse-LS1043 which are not involved in
LSDK, port the dts patches from 4.14.

The patches are sorted into the following categories:
  301-arch-xxxx
  302-dts-xxxx
  303-core-xxxx
  701-net-xxxx
  801-audio-xxxx
  802-can-xxxx
  803-clock-xxxx
  804-crypto-xxxx
  805-display-xxxx
  806-dma-xxxx
  807-gpio-xxxx
  808-i2c-xxxx
  809-jailhouse-xxxx
  810-keys-xxxx
  811-kvm-xxxx
  812-pcie-xxxx
  813-pm-xxxx
  814-qe-xxxx
  815-sata-xxxx
  816-sdhc-xxxx
  817-spi-xxxx
  818-thermal-xxxx
  819-uart-xxxx
  820-usb-xxxx
  821-vfio-xxxx

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>

1 files changed, 63 insertions, 0 deletions

diff --git a/target/linux/layerscape/patches-5.4/804-crypto-0012-MLK-19053-crypto-caam-RNG4-TRNG-errata.patch b/target/linux/layerscape/patches-5.4/804-crypto-0012-MLK-19053-crypto-caam-RNG4-TRNG-errata.patch
new file mode 100644
index 0000000000..52d15b71a6
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/804-crypto-0012-MLK-19053-crypto-caam-RNG4-TRNG-errata.patch
@@ -0,0 +1,63 @@
+From e1a89cdf6fa6b04806eb24b939738bb89ab62914 Mon Sep 17 00:00:00 2001
+From: Aymen Sghaier <aymen.sghaier@nxp.com>
+Date: Thu, 13 Sep 2018 16:41:03 +0200
+Subject: [PATCH] MLK-19053 crypto: caam - RNG4 TRNG errata
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+ The TRNG as used in RNG4, used in CAAM has a documentation issue. The
+effect is that it is possible that the entropy used to instantiate the
+DRBG may be old entropy, rather than newly generated entropy. There is
+proper programming guidance, but it is not in the documentation.
+
+Signed-off-by: Aymen Sghaier <aymen.sghaier@nxp.com>
+Signed-off-by: Vipul Kumar <vipul_kumar@mentor.com>
+(cherry picked from commit ea2b30c8171acf7624e3d44276737c3878ca900d)
+
+-ported to RNG initialization in ctrl.c
+-changed commit headline
+
+Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
+---
+ drivers/crypto/caam/ctrl.c | 9 +++++++--
+ drivers/crypto/caam/regs.h | 3 ++-
+ 2 files changed, 9 insertions(+), 3 deletions(-)
+
+--- a/drivers/crypto/caam/ctrl.c
++++ b/drivers/crypto/caam/ctrl.c
+@@ -339,7 +339,11 @@ static void kick_trng(struct platform_de
+ 	r4tst = &ctrl->r4tst[0];
+ 
+ 	/* put RNG4 into program mode */
+-	clrsetbits_32(&r4tst->rtmctl, 0, RTMCTL_PRGM);
++	/* Setting both RTMCTL:PRGM and RTMCTL:TRNG_ACC causes TRNG to
++	 * properly invalidate the entropy in the entropy register and
++	 * force re-generation.
++	 */
++	clrsetbits_32(&r4tst->rtmctl, 0, RTMCTL_PRGM | RTMCTL_ACC);
+ 
+ 	/*
+ 	 * Performance-wise, it does not make sense to
+@@ -369,7 +373,8 @@ start_rng:
+ 	 * select raw sampling in both entropy shifter
+ 	 * and statistical checker; ; put RNG4 into run mode
+ 	 */
+-	clrsetbits_32(&r4tst->rtmctl, RTMCTL_PRGM, RTMCTL_SAMP_MODE_RAW_ES_SC);
++	clrsetbits_32(&r4tst->rtmctl, RTMCTL_PRGM | RTMCTL_ACC,
++		      RTMCTL_SAMP_MODE_RAW_ES_SC);
+ }
+ 
+ static int caam_get_era_from_hw(struct caam_ctrl __iomem *ctrl)
+--- a/drivers/crypto/caam/regs.h
++++ b/drivers/crypto/caam/regs.h
+@@ -492,7 +492,8 @@ struct rngtst {
+ 
+ /* RNG4 TRNG test registers */
+ struct rng4tst {
+-#define RTMCTL_PRGM	0x00010000	/* 1 -> program mode, 0 -> run mode */
++#define RTMCTL_ACC  BIT(5)  /* TRNG access mode */
++#define RTMCTL_PRGM BIT(16) /* 1 -> program mode, 0 -> run mode */
+ #define RTMCTL_SAMP_MODE_VON_NEUMANN_ES_SC	0 /* use von Neumann data in
+ 						     both entropy shifter and
+ 						     statistical checker */