mbox series

[v1,0/2] clocksource/drivers/arm_global_timer: Two small fixes

Message ID 20240218174138.1942418-1-martin.blumenstingl@googlemail.com
Headers
Series clocksource/drivers/arm_global_timer: Two small fixes |

Message

Martin Blumenstingl Feb. 18, 2024, 5:41 p.m. UTC 
  This series consists of two small fixes:
1) incorrect max width (and therefore mask calculation) of the prescaler
   field in the Global Timer Control Register. The field is actually 8
   bit wide according to the Cortex-A9 MPCore Technical Reference Manual
   r3p0 [0]
2) non-function: a stray tab which is inconsistent with to the coding
   style in the driver

I don't have any ARM/STI hardware to verify the first fix. However, I
tested this on an Amlogic Meson8b board with Cortex-A5 which uses the
same Global Timer implementation as Cortex-A9 SoCs and the documentation
confirms the same register layout: [1]


[0] https://developer.arm.com/documentation/ddi0407/g/Global-timer--private-timers--and-watchdog-registers/Global-timer-registers/Global-Timer-Control-Register
[1] https://developer.arm.com/documentation/ddi0434/b/CIHJGFEA


Martin Blumenstingl (2):
  clocksource/drivers/arm_global_timer: Fix maximum prescaler value
  clocksource/drivers/arm_global_timer: Remove stray tab

 drivers/clocksource/arm_global_timer.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)