This patch adds code to resume L2 before MMU is enabled in suspend and cpuidle resume paths. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx> Signed-off-by: Amit Daniel Kachhap <amit.kachhap@xxxxxxxxxx> --- arch/arm/plat-s5p/sleep.S | 28 ++++++++++++++++++++++++++++ 1 files changed, 28 insertions(+), 0 deletions(-) diff --git a/arch/arm/plat-s5p/sleep.S b/arch/arm/plat-s5p/sleep.S index c371ba2..40bd9bf 100644 --- a/arch/arm/plat-s5p/sleep.S +++ b/arch/arm/plat-s5p/sleep.S @@ -23,6 +23,8 @@ */ #include <linux/linkage.h> +#include <asm/asm-offsets.h> +#include <asm/hardware/cache-l2x0.h> .text @@ -47,5 +49,31 @@ .data ENTRY(s3c_cpu_resume) +#ifdef CONFIG_CACHE_L2X0 + adr r0, l2x0_regs_phys + ldr r0, [r0] + ldr r1, [r0, #L2X0_R_PHY_BASE] + ldr r2, [r1, #L2X0_CTRL] + tst r2, #0x1 + bne resume_l2on + ldr r2, [r0, #L2X0_R_AUX_CTRL] + str r2, [r1, #L2X0_AUX_CTRL] + ldr r2, [r0, #L2X0_R_TAG_LATENCY] + str r2, [r1, #L2X0_TAG_LATENCY_CTRL] + ldr r2, [r0, #L2X0_R_DATA_LATENCY] + str r2, [r1, #L2X0_DATA_LATENCY_CTRL] + ldr r2, [r0, #L2X0_R_PREFETCH_CTRL] + str r2, [r1, #L2X0_PREFETCH_CTRL] + ldr r2, [r0, #L2X0_R_PWR_CTRL] + str r2, [r1, #L2X0_POWER_CTRL] + mov r2, #1 + str r2, [r1, #L2X0_CTRL] +resume_l2on: +#endif b cpu_resume ENDPROC(s3c_cpu_resume) +#ifdef CONFIG_CACHE_L2X0 + .globl l2x0_regs_phys +l2x0_regs_phys: + .long 0 +#endif -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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