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authorLori Hikichi <lori.hikichi@broadcom.com>2017-08-14 12:00:38 -0700
committerStephen Boyd <sboyd@codeaurora.org>2017-12-28 14:53:33 -0800
commitbecf123772a9ef15823a3f495478fe68e45b5028 (patch)
tree3aea47d2966f28410ebf32995c16fd9178e31e16 /drivers/clk/bcm/clk-iproc.h
parent4fbd8d194f06c8a3fd2af1ce560ddb31f7ec8323 (diff)
clk: iproc: Allow iproc pll to runtime calculate vco parameters
Add the ability for the iproc pll to calculate the pll parameters at runtime instead of only using predefined tables. This ability allows the clock users to select from the full range of vco frequencies. The old method of table based programming is retained so that existing users will retain expected behavior. The flag IPROC_CLK_PLL_CALC_PARAM will need to be set to enable the new runtime calculation method. Currently, this is only being enabled for the audio pll. This feature also revealed a problem with the driver using the round_rate api. The round_rate api does not allow for frequencies larger than 2^31 to be returned. Those large frequencies are interpreted as an error code. Therefore, we are moving to the determine_rate api which solves this problem. Signed-off-by: Simran Rai <ssimran@broadcom.com> Signed-off-by: Lori Hikichi <lori.hikichi@broadcom.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Diffstat (limited to 'drivers/clk/bcm/clk-iproc.h')
-rw-r--r--drivers/clk/bcm/clk-iproc.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/clk/bcm/clk-iproc.h b/drivers/clk/bcm/clk-iproc.h
index 2148b4ea9f28..a48ddd3e0b28 100644
--- a/drivers/clk/bcm/clk-iproc.h
+++ b/drivers/clk/bcm/clk-iproc.h
@@ -81,6 +81,11 @@
#define IPROC_CLK_PLL_RESET_ACTIVE_LOW BIT(9)
/*
+ * Calculate the PLL parameters are runtime, instead of using table
+ */
+#define IPROC_CLK_PLL_CALC_PARAM BIT(10)
+
+/*
* Parameters for VCO frequency configuration
*
* VCO frequency =

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