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From: Wenyou Yang <wenyou.yang@atmel.com>
To: <nicolas.ferre@atmel.com>, <linux@arm.linux.org.uk>
Cc: <linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>,
<alexandre.belloni@free-electrons.com>,
<sylvain.rochet@finsecur.com>, <peda@axentia.se>,
<wenyou.yang@atmel.com>
Subject: [PATCH 03/12] pm: at91: pm_slowclock: remove the unused code related with SLOWDOWN_MASTER_CLOCK
Date: Tue, 20 Jan 2015 16:16:56 +0800 [thread overview]
Message-ID: <1421741825-18226-4-git-send-email-wenyou.yang@atmel.com> (raw)
In-Reply-To: <1421741825-18226-1-git-send-email-wenyou.yang@atmel.com>
The SLOWDOWN_MASTER_CLOCK definition is not used, remove the redundant code.
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
---
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
next prev parent reply other threads:[~2015-01-20 8:19 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-20 8:16 [PATCH 00/12] AT91 pm cleanup for 3.20 Wenyou Yang
2015-01-20 8:16 ` [PATCH 01/12] pm: at91: pm_slowclock: improve reliability of suspend/resume Wenyou Yang
2015-01-20 8:16 ` [PATCH 02/12] pm: at91: Workaround DDRSDRC self-refresh bug with LPDDR1 memories Wenyou Yang
2015-01-20 8:16 ` Wenyou Yang [this message]
2015-01-20 8:16 ` [PATCH 04/12] pm: at91: move the copying the sram function to the sram initializationi phase Wenyou Yang
2015-01-20 8:16 ` [PATCH 05/12] ARM: at91: move select SRAM to ARCH_AT91 Wenyou Yang
2015-01-23 10:24 ` Alexandre Belloni
2015-01-26 1:10 ` Yang, Wenyou
2015-01-20 8:16 ` [PATCH 06/12] pm: at91: remove the config item CONFIG_AT91_SLOW_CLOCK Wenyou Yang
2015-01-20 8:17 ` [PATCH 07/12] pm: at91: the standby mode uses the same sram function as the suspend to memory mode Wenyou Yang
2015-01-23 10:30 ` Alexandre Belloni
2015-01-23 16:50 ` Sylvain Rochet
2015-01-23 23:13 ` Alexandre Belloni
2015-01-27 3:08 ` Yang, Wenyou
2015-01-23 17:32 ` Sylvain Rochet
2015-01-23 23:02 ` Alexandre Belloni
2015-01-26 3:08 ` Yang, Wenyou
2015-01-26 3:06 ` Yang, Wenyou
2015-01-20 8:17 ` [PATCH 08/12] pm: at91: rename file name: pm_slowclock.S -->pm_suspend.S Wenyou Yang
2015-01-23 19:17 ` Sylvain Rochet
2015-01-23 23:17 ` Alexandre Belloni
2015-01-25 13:30 ` Sylvain Rochet
2015-01-26 1:25 ` Yang, Wenyou
2015-01-20 8:17 ` [PATCH 09/12] pm: at91: rename function name: at91_slow_clock()-->at91_pm_suspend_sram_fn Wenyou Yang
2015-01-20 8:24 ` Wenyou Yang
2015-01-20 8:24 ` [PATCH 10/12] pm: at91: remove the at91_xxx_standby() function definitions in the pm.h Wenyou Yang
2015-01-20 8:25 ` [PATCH 11/12] pm: at91: remove the struct ramc_ids .data at91_xxx_standby members Wenyou Yang
2015-01-20 8:26 ` [PATCH 12/12] pm: at91: amend the pm_suspend entry for at91_cpuidle_device Wenyou Yang
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