bcm53xx: add quick fixes for BCM53573

It adds and uses ILP clock that requires some other work (in progress)
for upstreaming it. Other than that it adds a quick fix for bcma to add
serial flash before trying to read SPROM.

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

diff --git a/target/linux/bcm53xx/patches-4.4/905-BCM53573-minor-hacks.patch b/target/linux/bcm53xx/patches-4.4/905-BCM53573-minor-hacks.patch
new file mode 100644 (file)
index 0000000..c48170a
--- /dev/null
+++ b/target/linux/bcm53xx/patches-4.4/905-BCM53573-minor-hacks.patch
@@ -0,0 +1,97 @@
+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
+@@ -44,6 +44,24 @@
+               };
+       };
+ 
++      ilp: ilp@0 {
++              compatible = "brcm,ns-ilp";
++              reg = <0x18012000 0x1000>;
++              reg-names = "pmu";
++              clocks = <&alp>;
++              #clock-cells = <0>;
++              clock-output-names = "ilp";
++      };
++
++      timer {
++              compatible = "arm,armv7-timer";
++              interrupts = <GIC_PPI 13 0>,
++                           <GIC_PPI 14 0>,
++                           <GIC_PPI 11 0>,
++                           <GIC_PPI 10 0>;
++              clocks = <&ilp>;
++      };
++
+       clocks {
+               #address-cells = <1>;
+               #size-cells = <1>;
+--- a/drivers/bcma/main.c
++++ b/drivers/bcma/main.c
+@@ -349,14 +349,6 @@ 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);
+@@ -437,6 +429,14 @@ 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>
+@@ -376,6 +377,16 @@ arch_timer_detect_rate(void __iomem *cnt
+                       arch_timer_rate = arch_timer_get_cntfrq();
+       }
+ 
++      /* 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("Architected timer frequency not available\n");