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, 44 insertions, 0 deletions

diff --git a/target/linux/at91/patches-5.10/239-clk-at91-pmc-add-sama7g5-to-the-list-of-available-pm.patch b/target/linux/at91/patches-5.10/239-clk-at91-pmc-add-sama7g5-to-the-list-of-available-pm.patch
new file mode 100644
index 0000000000..6569d7a9ee
--- /dev/null
+++ b/target/linux/at91/patches-5.10/239-clk-at91-pmc-add-sama7g5-to-the-list-of-available-pm.patch
@@ -0,0 +1,44 @@
+From 8a38e0dda46c9d941a61d8b2e6c14704531b7871 Mon Sep 17 00:00:00 2001
+From: Claudiu Beznea <claudiu.beznea@microchip.com>
+Date: Mon, 11 Oct 2021 14:27:10 +0300
+Subject: [PATCH 239/247] clk: at91: pmc: add sama7g5 to the list of available
+ pmcs
+
+Add SAMA7G5 to the list of available PMCs such that the suspend/resume
+code for clocks to be used on backup mode.
+
+Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
+Link: https://lore.kernel.org/r/20211011112719.3951784-7-claudiu.beznea@microchip.com
+Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
+Signed-off-by: Stephen Boyd <sboyd@kernel.org>
+---
+ drivers/clk/at91/pmc.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/clk/at91/pmc.c b/drivers/clk/at91/pmc.c
+index 517973062719..5aa9c1f1c886 100644
+--- a/drivers/clk/at91/pmc.c
++++ b/drivers/clk/at91/pmc.c
+@@ -148,8 +148,9 @@ static struct syscore_ops pmc_syscore_ops = {
+ 	.resume = at91_pmc_resume,
+ };
+ 
+-static const struct of_device_id sama5d2_pmc_dt_ids[] = {
++static const struct of_device_id pmc_dt_ids[] = {
+ 	{ .compatible = "atmel,sama5d2-pmc" },
++	{ .compatible = "microchip,sama7g5-pmc", },
+ 	{ /* sentinel */ }
+ };
+ 
+@@ -157,7 +158,7 @@ static int __init pmc_register_ops(void)
+ {
+ 	struct device_node *np;
+ 
+-	np = of_find_matching_node(NULL, sama5d2_pmc_dt_ids);
++	np = of_find_matching_node(NULL, pmc_dt_ids);
+ 	if (!np)
+ 		return -ENODEV;
+ 
+-- 
+2.32.0
+