zynqmp: pm: Buffer the PLL mode that is set using IOCTL API
When linux calls pm_ioctl_set_pll_frac_mode() it doesn't expect the
fractional mode to be changed in hardware. Furthermore, even before this
patch setting the mode which is done by writing into register takes
no effect until the PLL reset is deasserted, i.e. until linux "enables"
the PLL. To adjust the code to system-level PLL EEMI API and avoid
unnecessary IPIs that would otherwise be issued, we buffer the mode
value set via IOCTL until the PLL mode really needs to be set.
Signed-off-by: Mirela Simonovic <mirela.simonovic@aggios.com>
Acked-by: Will Wong <WILLW@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>
diff --git a/plat/xilinx/zynqmp/pm_service/pm_api_ioctl.c b/plat/xilinx/zynqmp/pm_service/pm_api_ioctl.c
index 235d882..284d901 100644
--- a/plat/xilinx/zynqmp/pm_service/pm_api_ioctl.c
+++ b/plat/xilinx/zynqmp/pm_service/pm_api_ioctl.c
@@ -332,7 +332,7 @@
/**
* pm_ioctl_set_pll_frac_mode() - Ioctl function for
* setting pll mode
- * @pll PLL id
+ * @pll PLL clock id
* @mode Mode fraction/integar
*
* This function sets PLL mode
@@ -342,7 +342,7 @@
static enum pm_ret_status pm_ioctl_set_pll_frac_mode
(unsigned int pll, unsigned int mode)
{
- return pm_api_clk_set_pll_mode(pll, mode);
+ return pm_clock_set_pll_mode(pll, mode);
}
/**