at91: add kernel support for sama7g5 soc

Add kernel support for SAMA7G5 by back-porting mainline kernel patches.
Among SAMA7G5 features could be remembered:
- ARM Cortex-A7
- double data rate multi-port dynamic RAM controller supporting DDR2,
  DDR3, DDR3L, LPDDR2, LPDDR3 up to 533MHz
- peripherals for audio, video processing
- 1 gigabit + 1 megabit Ethernet controllers
- 6 CAN controllers
- trust zone support
- DVFS for CPU
- criptography IPs

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>

1 files changed, 85 insertions, 0 deletions

diff --git a/target/linux/at91/patches-5.10/168-media-atmel-atmel-isc-add-RLP-to-register-offsets.patch b/target/linux/at91/patches-5.10/168-media-atmel-atmel-isc-add-RLP-to-register-offsets.patch
new file mode 100644
index 0000000000..a27ef80567
--- /dev/null
+++ b/target/linux/at91/patches-5.10/168-media-atmel-atmel-isc-add-RLP-to-register-offsets.patch
@@ -0,0 +1,85 @@
+From b432a8b0fc88de5b49236482053d8d372c68ee55 Mon Sep 17 00:00:00 2001
+From: Eugen Hristev <eugen.hristev@microchip.com>
+Date: Tue, 13 Apr 2021 12:57:10 +0200
+Subject: [PATCH 168/247] media: atmel: atmel-isc: add RLP to register offsets
+
+The RLP submodule is a part of the atmel-isc pipeline, and stands for
+Rounding,Limiting and Packaging. It used to extract specific data from the
+ISC pipeline. For example if we want to output greyscale 8 bit, we would
+use limiting to 8 bits, and packaging to Luma component only.
+Add rlp to the reg offsets struct.
+This will allow different products to have a different reg offset for this
+particular module.
+
+Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
+Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
+Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
+---
+ drivers/media/platform/atmel/atmel-isc-base.c    | 4 ++--
+ drivers/media/platform/atmel/atmel-isc-regs.h    | 2 ++
+ drivers/media/platform/atmel/atmel-isc.h         | 2 ++
+ drivers/media/platform/atmel/atmel-sama5d2-isc.c | 1 +
+ 4 files changed, 7 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/media/platform/atmel/atmel-isc-base.c b/drivers/media/platform/atmel/atmel-isc-base.c
+index b398cdfdc2c9..25c90b821067 100644
+--- a/drivers/media/platform/atmel/atmel-isc-base.c
++++ b/drivers/media/platform/atmel/atmel-isc-base.c
+@@ -726,8 +726,8 @@ static int isc_configure(struct isc_device *isc)
+ 
+ 	regmap_update_bits(regmap, ISC_PFE_CFG0, mask, pfe_cfg0);
+ 
+-	regmap_update_bits(regmap, ISC_RLP_CFG, ISC_RLP_CFG_MODE_MASK,
+-			   rlp_mode);
++	regmap_update_bits(regmap, ISC_RLP_CFG + isc->offsets.rlp,
++			   ISC_RLP_CFG_MODE_MASK, rlp_mode);
+ 
+ 	regmap_write(regmap, ISC_DCFG, dcfg);
+ 
+diff --git a/drivers/media/platform/atmel/atmel-isc-regs.h b/drivers/media/platform/atmel/atmel-isc-regs.h
+index 04839def6ef6..2205484e04fc 100644
+--- a/drivers/media/platform/atmel/atmel-isc-regs.h
++++ b/drivers/media/platform/atmel/atmel-isc-regs.h
+@@ -204,6 +204,8 @@
+ /* Subsampling 4:2:2 to 4:2:0 Control Register */
+ #define ISC_SUB420_CTRL 0x000003cc
+ 
++/* Offset for RLP register specific to sama5d2 product */
++#define ISC_SAMA5D2_RLP_OFFSET	0
+ /* Rounding, Limiting and Packing Configuration Register */
+ #define ISC_RLP_CFG     0x000003d0
+ 
+diff --git a/drivers/media/platform/atmel/atmel-isc.h b/drivers/media/platform/atmel/atmel-isc.h
+index 9eb85540d89d..4a5293c66f49 100644
+--- a/drivers/media/platform/atmel/atmel-isc.h
++++ b/drivers/media/platform/atmel/atmel-isc.h
+@@ -149,12 +149,14 @@ struct isc_ctrls {
+  * @cbc:		Offset for the CBC register
+  * @sub422:		Offset for the SUB422 register
+  * @sub420:		Offset for the SUB420 register
++ * @rlp:		Offset for the RLP register
+  */
+ struct isc_reg_offsets {
+ 	u32 csc;
+ 	u32 cbc;
+ 	u32 sub422;
+ 	u32 sub420;
++	u32 rlp;
+ };
+ 
+ /*
+diff --git a/drivers/media/platform/atmel/atmel-sama5d2-isc.c b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
+index 57ea1ae50c44..b01b5b9f229b 100644
+--- a/drivers/media/platform/atmel/atmel-sama5d2-isc.c
++++ b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
+@@ -255,6 +255,7 @@ static int atmel_isc_probe(struct platform_device *pdev)
+ 	isc->offsets.cbc = ISC_SAMA5D2_CBC_OFFSET;
+ 	isc->offsets.sub422 = ISC_SAMA5D2_SUB422_OFFSET;
+ 	isc->offsets.sub420 = ISC_SAMA5D2_SUB420_OFFSET;
++	isc->offsets.rlp = ISC_SAMA5D2_RLP_OFFSET;
+ 
+ 	/* sama5d2-isc - 8 bits per beat */
+ 	isc->dcfg = ISC_DCFG_YMBSIZE_BEATS8 | ISC_DCFG_CMBSIZE_BEATS8;
+-- 
+2.32.0
+