bcm53xx: add testing support for kernel 5.10

It still requires fixing PCIe support:
[    6.644699] pcie_iproc_bcma bcma0:7: host bridge /axi@18000000/pcie@12000 ranges:
[    6.652217] pcie_iproc_bcma bcma0:7:   No bus range found for /axi@18000000/pcie@12000, using [bus 00-ff]
[    6.661833] OF: /axi@18000000/pcie@12000: Missing device_type
[    6.667622] pcie_iproc_bcma: probe of bcma0:7 failed with error -12
[    6.673985] pcie_iproc_bcma bcma0:8: host bridge /axi@18000000/pcie@13000 ranges:
[    6.681514] pcie_iproc_bcma bcma0:8:   No bus range found for /axi@18000000/pcie@13000, using [bus 00-ff]
[    6.691137] pcie_iproc_bcma: probe of bcma0:8 failed with error -12
[    6.697522] pcie_iproc_bcma bcma0:9: host bridge /axi@18000000/pcie@14000 ranges:
[    6.705048] pcie_iproc_bcma bcma0:9:   No bus range found for /axi@18000000/pcie@14000, using [bus 00-ff]
[    6.714669] pcie_iproc_bcma: probe of bcma0:9 failed with error -12

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

1 files changed, 80 insertions, 0 deletions

diff --git a/target/linux/bcm53xx/patches-5.10/905-BCM53573-minor-hacks.patch b/target/linux/bcm53xx/patches-5.10/905-BCM53573-minor-hacks.patch
new file mode 100644
index 0000000000..f47ea95c95
--- /dev/null
+++ b/target/linux/bcm53xx/patches-5.10/905-BCM53573-minor-hacks.patch
@@ -0,0 +1,80 @@
+From 6f1c62440eb6846cb8045d7a5480ec7bbe47c96f Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Mon, 15 Aug 2016 10:30:41 +0200
+Subject: [PATCH] BCM53573 minor hacks
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+---
+
+--- a/arch/arm/boot/dts/bcm53573.dtsi
++++ b/arch/arm/boot/dts/bcm53573.dtsi
+@@ -54,6 +54,7 @@
+ 			     <GIC_PPI 14 IRQ_TYPE_LEVEL_LOW>,
+ 			     <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW>,
+ 			     <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>;
++		clocks = <&ilp>;
+ 	};
+ 
+ 	clocks {
+--- a/drivers/bcma/main.c
++++ b/drivers/bcma/main.c
+@@ -330,14 +330,6 @@ static int bcma_register_devices(struct
+ 	}
+ #endif
+ 
+-#ifdef CONFIG_BCMA_SFLASH
+-	if (bus->drv_cc.sflash.present) {
+-		err = platform_device_register(&bcma_sflash_dev);
+-		if (err)
+-			bcma_err(bus, "Error registering serial flash\n");
+-	}
+-#endif
+-
+ #ifdef CONFIG_BCMA_NFLASH
+ 	if (bus->drv_cc.nflash.present) {
+ 		err = platform_device_register(&bcma_nflash_dev);
+@@ -415,6 +407,14 @@ int bcma_bus_register(struct bcma_bus *b
+ 			bcma_register_core(bus, core);
+ 	}
+ 
++#ifdef CONFIG_BCMA_SFLASH
++	if (bus->drv_cc.sflash.present) {
++		err = platform_device_register(&bcma_sflash_dev);
++		if (err)
++			bcma_err(bus, "Error registering serial flash\n");
++	}
++#endif
++
+ 	/* Try to get SPROM */
+ 	err = bcma_sprom_get(bus);
+ 	if (err == -ENOENT) {
+--- a/drivers/clocksource/arm_arch_timer.c
++++ b/drivers/clocksource/arm_arch_timer.c
+@@ -14,6 +14,7 @@
+ #include <linux/smp.h>
+ #include <linux/cpu.h>
+ #include <linux/cpu_pm.h>
++#include <linux/clk.h>
+ #include <linux/clockchips.h>
+ #include <linux/clocksource.h>
+ #include <linux/interrupt.h>
+@@ -919,6 +920,16 @@ static void arch_timer_of_configure_rate
+ 	if (of_property_read_u32(np, "clock-frequency", &arch_timer_rate))
+ 		arch_timer_rate = rate;
+ 
++	/* Get clk rate through clk driver if present */
++	if (!arch_timer_rate) {
++		struct clk *clk = of_clk_get(np, 0);
++
++		if (!IS_ERR(clk)) {
++			if (!clk_prepare_enable(clk))
++				arch_timer_rate = clk_get_rate(clk);
++		}
++	}
++
+ 	/* Check the timer frequency. */
+ 	if (arch_timer_rate == 0)
+ 		pr_warn("frequency not available\n");