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, 59 insertions, 0 deletions

diff --git a/target/linux/at91/patches-5.10/119-net-macb-add-support-for-sama7g5-gem-interface.patch b/target/linux/at91/patches-5.10/119-net-macb-add-support-for-sama7g5-gem-interface.patch
new file mode 100644
index 0000000000..773bbbba31
--- /dev/null
+++ b/target/linux/at91/patches-5.10/119-net-macb-add-support-for-sama7g5-gem-interface.patch
@@ -0,0 +1,59 @@
+From 0085cd8576ceeaddeedf973b939b41ba96e3f77c Mon Sep 17 00:00:00 2001
+From: Claudiu Beznea <claudiu.beznea@microchip.com>
+Date: Wed, 9 Dec 2020 15:03:38 +0200
+Subject: [PATCH 119/247] net: macb: add support for sama7g5 gem interface
+
+Add support for SAMA7G5 gigabit ethernet interface.
+
+Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
+Reviewed-by: Andrew Lunn <andrew@lunn.ch>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/ethernet/cadence/macb_main.c | 17 +++++++++++++++++
+ 1 file changed, 17 insertions(+)
+
+diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
+index c8d66f966a8b..ebcc46d8aa9d 100644
+--- a/drivers/net/ethernet/cadence/macb_main.c
++++ b/drivers/net/ethernet/cadence/macb_main.c
+@@ -4359,6 +4359,14 @@ static const struct macb_usrio_config macb_default_usrio = {
+ 	.refclk = MACB_BIT(CLKEN),
+ };
+ 
++static const struct macb_usrio_config sama7g5_usrio = {
++	.mii = 0,
++	.rmii = 1,
++	.rgmii = 2,
++	.refclk = BIT(2),
++	.hdfctlen = BIT(6),
++};
++
+ static const struct macb_config fu540_c000_config = {
+ 	.caps = MACB_CAPS_GIGABIT_MODE_AVAILABLE | MACB_CAPS_JUMBO |
+ 		MACB_CAPS_GEM_HAS_PTP,
+@@ -4452,6 +4460,14 @@ static const struct macb_config zynq_config = {
+ 	.usrio = &macb_default_usrio,
+ };
+ 
++static const struct macb_config sama7g5_gem_config = {
++	.caps = MACB_CAPS_GIGABIT_MODE_AVAILABLE | MACB_CAPS_CLK_HW_CHG,
++	.dma_burst_length = 16,
++	.clk_init = macb_clk_init,
++	.init = macb_init,
++	.usrio = &sama7g5_usrio,
++};
++
+ static const struct of_device_id macb_dt_ids[] = {
+ 	{ .compatible = "cdns,at32ap7000-macb" },
+ 	{ .compatible = "cdns,at91sam9260-macb", .data = &at91sam9260_config },
+@@ -4469,6 +4485,7 @@ static const struct of_device_id macb_dt_ids[] = {
+ 	{ .compatible = "cdns,zynqmp-gem", .data = &zynqmp_config},
+ 	{ .compatible = "cdns,zynq-gem", .data = &zynq_config },
+ 	{ .compatible = "sifive,fu540-c000-gem", .data = &fu540_c000_config },
++	{ .compatible = "microchip,sama7g5-gem", .data = &sama7g5_gem_config },
+ 	{ /* sentinel */ }
+ };
+ MODULE_DEVICE_TABLE(of, macb_dt_ids);
+-- 
+2.32.0
+