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arm, am335x: Enable Spread Spectrum for the MPU

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Enable Spread Spectrum for the MPU by calculating the required
values and setting the registers accordingly.

Signed-off-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Heiko Schocher
2016-06-07 08:31:19 +02:00
committed by Tom Rini
parent c01bc75e7d
commit 694607b563
3 changed files with 76 additions and 1 deletions
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1
arch/arm/include/asm/arch-am33xx/clock.h
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@@ -117,4 +117,5 @@ void enable_basic_clocks(void);
void do_enable_clocks(u32 *const *, u32 *const *, u8);
void do_disable_clocks(u32 *const *, u32 *const *, u8);
void set_mpu_spreadspectrum(int permille);
#endif

3
arch/arm/include/asm/arch-am33xx/cpu.h
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@@ -99,7 +99,8 @@ struct cm_wkuppll {
unsigned int timer0clkctrl; /* offset 0x10 */
unsigned int resv2[3];
unsigned int idlestdpllmpu; /* offset 0x20 */
unsigned int resv3[2];
unsigned int sscdeltamstepdllmpu; /* off 0x24 */
unsigned int sscmodfreqdivdpllmpu; /* off 0x28 */
unsigned int clkseldpllmpu; /* offset 0x2c */
unsigned int resv4[1];
unsigned int idlestdpllddr; /* offset 0x34 */