[PATCH 03/12] pm: at91: pm_slowclock: remove the unused code related with... | linux-arm-kernel

[PATCH 00/12] AT91 pm cleanup for 3.20 · Wenyou Yang <hidden> · 2015-01-20
[PATCH 01/12] pm: at91: pm_slowclock: improve reliability of suspend/resume · Wenyou Yang <hidden> · 2015-01-20
[PATCH 02/12] pm: at91: Workaround DDRSDRC self-refresh bug with LPDDR1 memories. · Wenyou Yang <hidden> · 2015-01-20
[PATCH 03/12] pm: at91: pm_slowclock: remove the unused code related with SLOWDOWN_MASTER_CLOCK · Wenyou Yang <hidden> · 2015-01-20
[PATCH 04/12] pm: at91: move the copying the sram function to the sram initializationi phase · Wenyou Yang <hidden> · 2015-01-20
[PATCH 05/12] ARM: at91: move select SRAM to ARCH_AT91 · Wenyou Yang <hidden> · 2015-01-20
Re: [PATCH 05/12] ARM: at91: move select SRAM to ARCH_AT91 · Alexandre Belloni <hidden> · 2015-01-23
RE: [PATCH 05/12] ARM: at91: move select SRAM to ARCH_AT91 · Yang, Wenyou <hidden> · 2015-01-26
[PATCH 07/12] pm: at91: the standby mode uses the same sram function as the suspend to memory mode · Wenyou Yang <hidden> · 2015-01-20
Re: [PATCH 07/12] pm: at91: the standby mode uses the same sram function as the suspend to memory mode · Alexandre Belloni <hidden> · 2015-01-23
Re: [PATCH 07/12] pm: at91: the standby mode uses the same sram function as the suspend to memory mode · Sylvain Rochet <hidden> · 2015-01-23
Re: [PATCH 07/12] pm: at91: the standby mode uses the same sram function as the suspend to memory mode · Alexandre Belloni <hidden> · 2015-01-23
RE: [PATCH 07/12] pm: at91: the standby mode uses the same sram function as the suspend to memory mode · Yang, Wenyou <hidden> · 2015-01-27
Re: [PATCH 07/12] pm: at91: the standby mode uses the same sram function as the suspend to memory mode · Sylvain Rochet <hidden> · 2015-01-23
Re: [PATCH 07/12] pm: at91: the standby mode uses the same sram function as the suspend to memory mode · Alexandre Belloni <hidden> · 2015-01-23
RE: [PATCH 07/12] pm: at91: the standby mode uses the same sram function as the suspend to memory mode · Yang, Wenyou <hidden> · 2015-01-26
RE: [PATCH 07/12] pm: at91: the standby mode uses the same sram function as the suspend to memory mode · Yang, Wenyou <hidden> · 2015-01-26
[PATCH 08/12] pm: at91: rename file name: pm_slowclock.S -->pm_suspend.S · Wenyou Yang <hidden> · 2015-01-20
Re: [PATCH 08/12] pm: at91: rename file name: pm_slowclock.S -->pm_suspend.S · Sylvain Rochet <hidden> · 2015-01-23
Re: [PATCH 08/12] pm: at91: rename file name: pm_slowclock.S -->pm_suspend.S · Alexandre Belloni <hidden> · 2015-01-23
Re: [PATCH 08/12] pm: at91: rename file name: pm_slowclock.S -->pm_suspend.S · Sylvain Rochet <hidden> · 2015-01-25
RE: [PATCH 08/12] pm: at91: rename file name: pm_slowclock.S -->pm_suspend.S · Yang, Wenyou <hidden> · 2015-01-26
[PATCH 06/12] pm: at91: remove the config item CONFIG_AT91_SLOW_CLOCK · Wenyou Yang <hidden> · 2015-01-20
[PATCH 09/12] pm: at91: rename function name: at91_slow_clock()-->at91_pm_suspend_sram_fn · Wenyou Yang <hidden> · 2015-01-20
[PATCH 09/12] pm: at91: rename function name: at91_slow_clock()-->at91_pm_suspend_sram_fn · Wenyou Yang <hidden> · 2015-01-20
[PATCH 10/12] pm: at91: remove the at91_xxx_standby() function definitions in the pm.h · Wenyou Yang <hidden> · 2015-01-20
[PATCH 11/12] pm: at91: remove the struct ramc_ids .data at91_xxx_standby members · Wenyou Yang <hidden> · 2015-01-20
[PATCH 12/12] pm: at91: amend the pm_suspend entry for at91_cpuidle_device · Wenyou Yang <hidden> · 2015-01-20

STALE4147d REVIEWED: 1 (0M)

Revisions (5)

2015-01-20 v1 current
2015-01-26 v2 [diff vs current]
2015-01-27 v3 [diff vs current]
2015-01-28 v4 [diff vs current]
2015-01-29 v5 [diff vs current]

[PATCH 03/12] pm: at91: pm_slowclock: remove the unused code related with SLOWDOWN_MASTER_CLOCK

From: Wenyou Yang <hidden>
Date: 2015-01-20 08:19:05
Also in: lkml
Subsystem: arm port, arm/microchip (at91) soc support, the rest · Maintainers: Russell King, Nicolas Ferre, Alexandre Belloni, Claudiu Beznea, Linus Torvalds

The SLOWDOWN_MASTER_CLOCK definition is not used, remove the redundant code.

Signed-off-by: Wenyou Yang <redacted>
Acked-by: Alexandre Belloni <redacted>
---
 arch/arm/mach-at91/pm_slowclock.S |   37 -------------------------------------
 1 file changed, 37 deletions(-)

diff --git a/arch/arm/mach-at91/pm_slowclock.S b/arch/arm/mach-at91/pm_slowclock.S
index 5859f42..634d819 100644
--- a/arch/arm/mach-at91/pm_slowclock.S
+++ b/arch/arm/mach-at91/pm_slowclock.S

@@ -11,19 +11,10 @@
  * published by the Free Software Foundation.
  *
  */
-
 #include <linux/linkage.h>
 #include <linux/clk/at91_pmc.h>
 #include <mach/at91_ramc.h>
 
-/*
- * When SLOWDOWN_MASTER_CLOCK is defined we will also slow down the Master
- * clock during suspend by adjusting its prescalar and divisor.
- * NOTE: This hasn't been shown to be stable on SAM9s; and on the RM9200 there
- *       are errata regarding adjusting the prescalar and divisor.
- */
-#undef SLOWDOWN_MASTER_CLOCK
-
 pmc	.req	r0
 sdramc	.req	r1
 ramc1	.req	r2

@@ -165,18 +156,6 @@ sdr_sr_done:
 
 	wait_mckrdy
 
-#ifdef SLOWDOWN_MASTER_CLOCK
-	/*
-	 * Set the Master Clock PRES and MDIV fields.
-	 *
-	 * See AT91RM9200 errata #27 and #28 for details.
-	 */
-	mov	tmp1, #0
-	str	tmp1, [pmc, #AT91_PMC_MCKR]
-
-	wait_mckrdy
-#endif
-
 	/* Save PLLA setting and disable it */
 	ldr	tmp1, [pmc, #AT91_CKGR_PLLAR]
 	str	tmp1, .saved_pllar

@@ -212,22 +191,6 @@ sdr_sr_done:
 	wait_pllalock
 4:
 
-#ifdef SLOWDOWN_MASTER_CLOCK
-	/*
-	 * First set PRES if it was not 0,
-	 * than set CSS and MDIV fields.
-	 *
-	 * See AT91RM9200 errata #27 and #28 for details.
-	 */
-	ldr	tmp1, .saved_mckr
-	tst	tmp1, #AT91_PMC_PRES
-	beq	2f
-	and	tmp1, tmp1, #AT91_PMC_PRES
-	str	tmp1, [pmc, #AT91_PMC_MCKR]
-
-	wait_mckrdy
-#endif
-
 	/*
 	 * Restore master clock setting
 	 */

-- 
1.7.9.5

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