diff options
| author | Adrian Fiergolski <adrian.fiergolski@fastree3d.com> | 2021-06-08 12:37:23 +0200 |
|---|---|---|
| committer | Michal Simek <michal.simek@xilinx.com> | 2021-06-11 09:24:58 +0200 |
| commit | 3414712ba8a82d6566e00645da8d37ea085a9f7c (patch) | |
| tree | d673f70707b65bb9ade3c1b916b2f65b348be6aa /board | |
| parent | e3b64beda5dd1a6b6bedfd1fe0e50be1ddea7044 (diff) | |
arm64: zynqmp: Writing correct value to ANALOG_BUS
The default register configuration after powerup for PSSYSMON_ANALOG_BUS
register is incorrect. Hence, fix this in SPL by writing correct fixed
value. It follows UG1085 chapter 'PS SYSMON Analog_Bus' and reflects commit
sw_apps:zynq ("056ca65d44549ce27f716d423e8dfdefeee7440c")
in Xilinx:embeddedsw[1].
[1] https://github.com/Xilinx/embeddedsw
Signed-off-by: Adrian Fiergolski <adrian.fiergolski@fastree3d.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'board')
| -rw-r--r-- | board/xilinx/zynqmp/zynqmp.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/board/xilinx/zynqmp/zynqmp.c b/board/xilinx/zynqmp/zynqmp.c index d05f0b2e12..ee4d0c85e6 100644 --- a/board/xilinx/zynqmp/zynqmp.c +++ b/board/xilinx/zynqmp/zynqmp.c @@ -287,6 +287,17 @@ int board_early_init_f(void) if (ret) return ret; + /* + * PS_SYSMON_ANALOG_BUS register determines mapping between SysMon + * supply sense channel to SysMon supply registers inside the IP. + * This register must be programmed to complete SysMon IP + * configuration. The default register configuration after + * power-up is incorrect. Hence, fix this by writing the + * correct value - 0x3210. + */ + writel(ZYNQMP_PS_SYSMON_ANALOG_BUS_VAL, + ZYNQMP_AMS_PS_SYSMON_ANALOG_BUS); + /* Delay is required for clocks to be propagated */ udelay(1000000); #endif |