From 55c5c7ea669a60980fa9d17055b74cbca7be3f58 Mon Sep 17 00:00:00 2001 From: Amaury Pouly Date: Sun, 22 Jun 2014 12:56:21 +0200 Subject: imx233/emi: cleanup and don't change emi freq if not needed Change-Id: I19f633a85bb12f880215905482934e34da549a13 --- firmware/target/arm/imx233/emi-imx233.c | 6 ++++++ firmware/target/arm/imx233/emi-imx233.h | 2 -- 2 files changed, 6 insertions(+), 2 deletions(-) (limited to 'firmware') diff --git a/firmware/target/arm/imx233/emi-imx233.c b/firmware/target/arm/imx233/emi-imx233.c index 259ada0e94..fcdb6d2353 100644 --- a/firmware/target/arm/imx233/emi-imx233.c +++ b/firmware/target/arm/imx233/emi-imx233.c @@ -135,6 +135,12 @@ void imx233_emi_set_frequency(unsigned long freq) * WARNING DANGER don't call any external function when sdram is disabled * otherwise you'll poke sdram and trigger a fatal data abort ! */ + static unsigned long cur_freq = -1; + /* avoid changes if unneeded */ + if(cur_freq == freq) + return; + cur_freq = freq; + /* first disable all interrupts */ int oldstatus = disable_interrupt_save(IRQ_FIQ_STATUS); /* flush the cache */ diff --git a/firmware/target/arm/imx233/emi-imx233.h b/firmware/target/arm/imx233/emi-imx233.h index 71aae3e884..9f66d405f8 100644 --- a/firmware/target/arm/imx233/emi-imx233.h +++ b/firmware/target/arm/imx233/emi-imx233.h @@ -46,9 +46,7 @@ struct imx233_emi_info_t * Absolute minimum CPU speed: 24 MHz */ #define IMX233_EMIFREQ_151_MHz 151580 #define IMX233_EMIFREQ_130_MHz 130910 -#define IMX233_EMIFREQ_120_MHz 120000 #define IMX233_EMIFREQ_64_MHz 64000 -#define IMX233_EMIFREQ_24_MHz 24000 void imx233_emi_set_frequency(unsigned long freq); struct imx233_emi_info_t imx233_emi_get_info(void); -- cgit v1.2.3