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, 49 insertions, 0 deletions

diff --git a/target/linux/at91/patches-5.10/104-clk-at91-clk-master-add-5th-divisor-for-mck-master.patch b/target/linux/at91/patches-5.10/104-clk-at91-clk-master-add-5th-divisor-for-mck-master.patch
new file mode 100644
index 0000000000..f01d6f4b3a
--- /dev/null
+++ b/target/linux/at91/patches-5.10/104-clk-at91-clk-master-add-5th-divisor-for-mck-master.patch
@@ -0,0 +1,49 @@
+From b2349278894bb381fa26a8717d3093d53f08fd36 Mon Sep 17 00:00:00 2001
+From: Eugen Hristev <eugen.hristev@microchip.com>
+Date: Thu, 19 Nov 2020 17:43:10 +0200
+Subject: [PATCH 104/247] clk: at91: clk-master: add 5th divisor for mck master
+
+clk-master can have 5 divisors with a field width of 3 bits
+on some products.
+
+Change the mask and number of divisors accordingly.
+
+Reported-by: Mihai Sain <mihai.sain@microchip.com>
+Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
+Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
+Link: https://lore.kernel.org/r/1605800597-16720-5-git-send-email-claudiu.beznea@microchip.com
+Signed-off-by: Stephen Boyd <sboyd@kernel.org>
+---
+ drivers/clk/at91/clk-master.c | 2 +-
+ drivers/clk/at91/pmc.h        | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/clk/at91/clk-master.c b/drivers/clk/at91/clk-master.c
+index bd0d8a69a2cf..aafd003b30cf 100644
+--- a/drivers/clk/at91/clk-master.c
++++ b/drivers/clk/at91/clk-master.c
+@@ -15,7 +15,7 @@
+ #define MASTER_PRES_MASK	0x7
+ #define MASTER_PRES_MAX		MASTER_PRES_MASK
+ #define MASTER_DIV_SHIFT	8
+-#define MASTER_DIV_MASK		0x3
++#define MASTER_DIV_MASK		0x7
+ 
+ #define PMC_MCR			0x30
+ #define PMC_MCR_ID_MSK		GENMASK(3, 0)
+diff --git a/drivers/clk/at91/pmc.h b/drivers/clk/at91/pmc.h
+index 7b86affc6d7c..0a9364bde339 100644
+--- a/drivers/clk/at91/pmc.h
++++ b/drivers/clk/at91/pmc.h
+@@ -48,7 +48,7 @@ extern const struct clk_master_layout at91sam9x5_master_layout;
+ 
+ struct clk_master_characteristics {
+ 	struct clk_range output;
+-	u32 divisors[4];
++	u32 divisors[5];
+ 	u8 have_div3_pres;
+ };
+ 
+-- 
+2.32.0
+