ARM: shmobile: Handle CA7 arch timer delay

Update the delay code to include arch timer checks
for CA7. From a arch timer availability perspective
CA7 should be treated same as CA15.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

1 files changed, 15 insertions, 8 deletions

diff --git a/arch/arm/mach-shmobile/timer.c b/arch/arm/mach-shmobile/timer.c
index 87c6be1e79bd..32ee335d2632 100644
--- a/arch/arm/mach-shmobile/timer.c
+++ b/arch/arm/mach-shmobile/timer.c
@@ -45,6 +45,7 @@ void __init shmobile_init_delay(void)
         struct device_node *np, *cpus;
         bool is_a7_a8_a9 = false;
         bool is_a15 = false;
+        bool has_arch_timer = false;
         u32 max_freq = 0;
 
         cpus = of_find_node_by_path("/cpus");
@@ -57,12 +58,16 @@ void __init shmobile_init_delay(void)
                 if (!of_property_read_u32(np, "clock-frequency", &freq))
                         max_freq = max(max_freq, freq);
 
-                if (of_device_is_compatible(np, "arm,cortex-a7") ||
-                    of_device_is_compatible(np, "arm,cortex-a8") ||
-                    of_device_is_compatible(np, "arm,cortex-a9"))
+                if (of_device_is_compatible(np, "arm,cortex-a8") ||
+                    of_device_is_compatible(np, "arm,cortex-a9")) {
                         is_a7_a8_a9 = true;
-                else if (of_device_is_compatible(np, "arm,cortex-a15"))
+                } else if (of_device_is_compatible(np, "arm,cortex-a7")) {
+                        is_a7_a8_a9 = true;
+                        has_arch_timer = true;
+                } else if (of_device_is_compatible(np, "arm,cortex-a15")) {
                         is_a15 = true;
+                        has_arch_timer = true;
+                }
         }
 
         of_node_put(cpus);
@@ -70,10 +75,12 @@ void __init shmobile_init_delay(void)
         if (!max_freq)
                 return;
 
-        if (is_a7_a8_a9)
-                shmobile_setup_delay_hz(max_freq, 1, 3);
-        else if (is_a15 && !IS_ENABLED(CONFIG_ARM_ARCH_TIMER))
-                shmobile_setup_delay_hz(max_freq, 2, 4);
+        if (!has_arch_timer || !IS_ENABLED(CONFIG_ARM_ARCH_TIMER)) {
+                if (is_a7_a8_a9)
+                        shmobile_setup_delay_hz(max_freq, 1, 3);
+                else if (is_a15)
+                        shmobile_setup_delay_hz(max_freq, 2, 4);
+        }
 }
 
 static void __init shmobile_late_time_init(void)