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authorSylvain Lemieux <slemieux@tycoint.com>2016-02-10 21:52:32 +0300
committerStephen Boyd <sboyd@codeaurora.org>2016-02-10 23:45:16 +0300
commit7e0810c9485ce696df3813574bca44139f6eb0c8 (patch)
tree713ed9293393277038ffcb223b1d8fed65356e9f
parent58bb621536d1f64db619744c85dcbb94705eda85 (diff)
downloadlinux-7e0810c9485ce696df3813574bca44139f6eb0c8.tar.xz
clk: lpc32xx: add HCLK PLL output configuration
This patch add the support to setup the HCLK PLL output using the "assigned-clock-rates" parameter in the device tree. If the option is not use, the clock setup by the kickstart and/or bootloader remain unchanged. The previous kernel version did not change the clock frequency output setup by the kickstart and/or bootloader; this version always setup the clock frequency output to 208MHz. Signed-off-by: Sylvain Lemieux <slemieux@tycoint.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
-rw-r--r--drivers/clk/nxp/clk-lpc32xx.c6
-rw-r--r--include/dt-bindings/clock/lpc32xx-clock.h1
2 files changed, 2 insertions, 5 deletions
diff --git a/drivers/clk/nxp/clk-lpc32xx.c b/drivers/clk/nxp/clk-lpc32xx.c
index 981ff0dd88b4..48b3a11aa09a 100644
--- a/drivers/clk/nxp/clk-lpc32xx.c
+++ b/drivers/clk/nxp/clk-lpc32xx.c
@@ -87,7 +87,7 @@ enum {
enum {
/* Start from the last defined clock in dt bindings */
- LPC32XX_CLK_ADC_DIV = LPC32XX_CLK_ADC + 1,
+ LPC32XX_CLK_ADC_DIV = LPC32XX_CLK_HCLK_PLL + 1,
LPC32XX_CLK_ADC_RTC,
LPC32XX_CLK_TEST1,
LPC32XX_CLK_TEST2,
@@ -96,7 +96,6 @@ enum {
LPC32XX_CLK_OSC,
LPC32XX_CLK_SYS,
LPC32XX_CLK_PLL397X,
- LPC32XX_CLK_HCLK_PLL,
LPC32XX_CLK_HCLK_DIV_PERIPH,
LPC32XX_CLK_HCLK_DIV,
LPC32XX_CLK_HCLK,
@@ -1526,9 +1525,6 @@ static void __init lpc32xx_clk_init(struct device_node *np)
of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
- /* For 13MHz osc valid output range of PLL is from 156MHz to 266.5MHz */
- clk_set_rate(clk[LPC32XX_CLK_HCLK_PLL], 208000000);
-
/* Set 48MHz rate of USB PLL clock */
clk_set_rate(clk[LPC32XX_CLK_USB_PLL], 48000000);
diff --git a/include/dt-bindings/clock/lpc32xx-clock.h b/include/dt-bindings/clock/lpc32xx-clock.h
index bcb1c9a73519..d41b6fea1450 100644
--- a/include/dt-bindings/clock/lpc32xx-clock.h
+++ b/include/dt-bindings/clock/lpc32xx-clock.h
@@ -47,6 +47,7 @@
#define LPC32XX_CLK_PWM1 32
#define LPC32XX_CLK_PWM2 33
#define LPC32XX_CLK_ADC 34
+#define LPC32XX_CLK_HCLK_PLL 35
/* LPC32XX USB clocks */
#define LPC32XX_USB_CLK_I2C 1