diff options
| author | Magnus Damm <damm+renesas@opensource.se> | 2014-10-06 03:59:20 +0400 |
|---|---|---|
| committer | Simon Horman <horms+renesas@verge.net.au> | 2014-10-24 05:53:30 +0400 |
| commit | 27f3c70874fc1d114e26c807e900fec4b50b1217 (patch) | |
| tree | 08214769289dc53c7b5f1468abebc91600e01cc2 /arch/arm/mach-shmobile/timer.c | |
| parent | f114040e3ea6e07372334ade75d1ee0775c355e1 (diff) | |
| download | linux-27f3c70874fc1d114e26c807e900fec4b50b1217.tar.xz | |
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>
Diffstat (limited to 'arch/arm/mach-shmobile/timer.c')
| -rw-r--r-- | arch/arm/mach-shmobile/timer.c | 23 |
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) |