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From: Paul Walmsley <paul@pwsan.com>
To: linux-arm-kernel@lists.arm.linux.org.uk
Cc: linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org,
	Paul Walmsley <paul@pwsan.com>
Subject: [PATCH 06/10] OMAP3 SRAM: renumber registers to make space for argument passing
Date: Tue, 12 May 2009 18:05:21 -0600	[thread overview]
Message-ID: <20090513000519.10349.22433.stgit@localhost.localdomain> (raw)
In-Reply-To: <20090512235713.10349.49339.stgit@localhost.localdomain>

Renumber registers in omap3_sram_configure_core_dpll() assembly code to
make space for additional parameters.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
 arch/arm/mach-omap2/sram34xx.S |  114 ++++++++++++++++++++--------------------
 1 files changed, 57 insertions(+), 57 deletions(-)

diff --git a/arch/arm/mach-omap2/sram34xx.S b/arch/arm/mach-omap2/sram34xx.S
index 9a45415..35131e5 100644
--- a/arch/arm/mach-omap2/sram34xx.S
+++ b/arch/arm/mach-omap2/sram34xx.S
@@ -63,50 +63,50 @@ ENTRY(omap3_sram_configure_core_dpll)
 	mov 	r0, #0 			@ return value
 	ldmfd	sp!, {r1-r12, pc}	@ restore regs and return
 unlock_dll:
-	ldr	r4, omap3_sdrc_dlla_ctrl
-	ldr	r5, [r4]
-	orr	r5, r5, #0x4
-	str	r5, [r4]		@ (no OCP barrier needed)
+	ldr	r11, omap3_sdrc_dlla_ctrl
+	ldr	r12, [r11]
+	orr	r12, r12, #0x4
+	str	r12, [r11]		@ (no OCP barrier needed)
 	bx	lr
 lock_dll:
-	ldr	r4, omap3_sdrc_dlla_ctrl
-	ldr	r5, [r4]
-	bic	r5, r5, #0x4
-	str	r5, [r4]		@ (no OCP barrier needed)
+	ldr	r11, omap3_sdrc_dlla_ctrl
+	ldr	r12, [r11]
+	bic	r12, r12, #0x4
+	str	r12, [r11]		@ (no OCP barrier needed)
 	bx	lr
 sdram_in_selfrefresh:
-	ldr	r4, omap3_sdrc_power	@ read the SDRC_POWER register
-	ldr	r5, [r4]		@ read the contents of SDRC_POWER
-	mov	r9, r5			@ keep a copy of SDRC_POWER bits
-	orr 	r5, r5, #0x40		@ enable self refresh on idle req
-	bic 	r5, r5, #0x4		@ clear PWDENA
-	str 	r5, [r4]		@ write back to SDRC_POWER register
-	ldr	r5, [r4]		@ posted-write barrier for SDRC
-	ldr	r4, omap3_cm_iclken1_core	@ read the CM_ICLKEN1_CORE reg
-	ldr	r5, [r4]
-	bic	r5, r5, #0x2		@ disable iclk bit for SDRC
-	str 	r5, [r4]
+	ldr	r11, omap3_sdrc_power	@ read the SDRC_POWER register
+	ldr	r12, [r11]		@ read the contents of SDRC_POWER
+	mov	r9, r12			@ keep a copy of SDRC_POWER bits
+	orr 	r12, r12, #0x40		@ enable self refresh on idle req
+	bic 	r12, r12, #0x4		@ clear PWDENA
+	str 	r12, [r11]		@ write back to SDRC_POWER register
+	ldr	r12, [r11]		@ posted-write barrier for SDRC
+	ldr	r11, omap3_cm_iclken1_core	@ read the CM_ICLKEN1_CORE reg
+	ldr	r12, [r11]
+	bic	r12, r12, #0x2		@ disable iclk bit for SDRC
+	str 	r12, [r11]
 wait_sdrc_idle:
-	ldr 	r4, omap3_cm_idlest1_core
-	ldr 	r5, [r4]
-	and 	r5, r5, #0x2		@ check for SDRC idle
-	cmp 	r5, #2
+	ldr 	r11, omap3_cm_idlest1_core
+	ldr 	r12, [r11]
+	and 	r12, r12, #0x2		@ check for SDRC idle
+	cmp 	r12, #2
 	bne 	wait_sdrc_idle
 	bx 	lr
 configure_core_dpll:
-	ldr 	r4, omap3_cm_clksel1_pll
-	ldr	r5, [r4]
-	ldr	r6, core_m2_mask_val	@ modify m2 for core dpll
-	and	r5, r5, r6
-	orr	r5, r5, r3, lsl #0x1B	@ r3 contains the M2 val
-	str	r5, [r4]
-	ldr	r5, [r4]		@ posted-write barrier for CM
-	mov 	r5, #0x800		@ wait for the clock to stabilise
+	ldr 	r11, omap3_cm_clksel1_pll
+	ldr	r12, [r11]
+	ldr	r10, core_m2_mask_val	@ modify m2 for core dpll
+	and	r12, r12, r10
+	orr	r12, r12, r3, lsl #0x1B	@ r3 contains the M2 val
+	str	r12, [r11]
+	ldr	r12, [r11]		@ posted-write barrier for CM
+	mov 	r12, #0x800		@ wait for the clock to stabilise
 	cmp	r3, #2
 	bne	wait_clk_stable
 	bx	lr
 wait_clk_stable:
-	subs 	r5, r5, #1
+	subs 	r12, r12, #1
 	bne	wait_clk_stable
 	nop
 	nop
@@ -120,42 +120,42 @@ wait_clk_stable:
 	nop
 	bx	lr
 enable_sdrc:
-	ldr 	r4, omap3_cm_iclken1_core
-	ldr	r5, [r4]
-	orr 	r5, r5, #0x2		@ enable iclk bit for SDRC
-	str 	r5, [r4]
+	ldr 	r11, omap3_cm_iclken1_core
+	ldr	r12, [r11]
+	orr 	r12, r12, #0x2		@ enable iclk bit for SDRC
+	str 	r12, [r11]
 wait_sdrc_idle1:
-	ldr 	r4, omap3_cm_idlest1_core
-	ldr	r5, [r4]
-	and 	r5, r5, #0x2
-	cmp	r5, #0
+	ldr 	r11, omap3_cm_idlest1_core
+	ldr	r12, [r11]
+	and 	r12, r12, #0x2
+	cmp	r12, #0
 	bne	wait_sdrc_idle1
 restore_sdrc_power_val:
-	ldr	r4, omap3_sdrc_power
-	str	r9, [r4]		@ restore SDRC_POWER, no barrier needed
+	ldr	r11, omap3_sdrc_power
+	str	r9, [r11]		@ restore SDRC_POWER, no barrier needed
 	bx	lr
 wait_dll_lock:
-	ldr	r4, omap3_sdrc_dlla_status
-	ldr	r5, [r4]
-	and 	r5, r5, #0x4
-	cmp	r5, #0x4
+	ldr	r11, omap3_sdrc_dlla_status
+	ldr	r12, [r11]
+	and 	r12, r12, #0x4
+	cmp	r12, #0x4
 	bne	wait_dll_lock
 	bx	lr
 wait_dll_unlock:
-	ldr	r4, omap3_sdrc_dlla_status
-	ldr	r5, [r4]
-	and	r5, r5, #0x4
-	cmp	r5, #0x0
+	ldr	r11, omap3_sdrc_dlla_status
+	ldr	r12, [r11]
+	and	r12, r12, #0x4
+	cmp	r12, #0x0
 	bne	wait_dll_unlock
 	bx	lr
 configure_sdrc:
-	ldr	r4, omap3_sdrc_rfr_ctrl
-	str	r0, [r4]
-	ldr	r4, omap3_sdrc_actim_ctrla
-	str	r1, [r4]
-	ldr	r4, omap3_sdrc_actim_ctrlb
-	str	r2, [r4]
-	ldr	r2, [r4]		@ posted-write barrier for SDRC
+	ldr	r11, omap3_sdrc_rfr_ctrl
+	str	r0, [r11]
+	ldr	r11, omap3_sdrc_actim_ctrla
+	str	r1, [r11]
+	ldr	r11, omap3_sdrc_actim_ctrlb
+	str	r2, [r11]
+	ldr	r2, [r11]		@ posted-write barrier for SDRC
 	bx	lr
 
 omap3_sdrc_power:



  parent reply	other threads:[~2009-05-13  0:07 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-05-13  0:05 [PATCH 00/10] OMAP clock/SDRC patches on v2.6.30-rc5 Paul Walmsley
2009-05-13  0:05 ` [PATCH 01/10] OMAP3 SRAM: mark OCM RAM as Non-cacheable Normal memory Paul Walmsley
2009-05-13  0:05 ` [PATCH 02/10] OMAP3 SRAM: add ARM barriers to omap3_sram_configure_core_dpll Paul Walmsley
2009-05-13  0:05 ` [PATCH 03/10] OMAP3 clock: add interconnect barriers to CORE DPLL M2 change Paul Walmsley
2009-05-13  0:05 ` [PATCH 04/10] OMAP3 SRAM: clear the SDRC PWRENA bit during SDRC frequency change Paul Walmsley
2009-05-13  0:05 ` [PATCH 05/10] OMAP3 SDRC: initialize SDRC_POWER at boot Paul Walmsley
2009-05-13  0:05 ` Paul Walmsley [this message]
2009-05-13  0:05 ` [PATCH 07/10] OMAP3 clock: only unlock SDRC DLL if SDRC clk < 83MHz Paul Walmsley
2009-05-13  0:05 ` [PATCH 08/10] OMAP3 clock: use pr_debug() rather than pr_info() in some clock change code Paul Walmsley
2009-05-13  0:05 ` [PATCH 09/10] OMAP3 clock: lessen amount of noisy messages Paul Walmsley
2009-05-13  0:05 ` [PATCH 10/10] OMAP2xxx clock: rename clk_init_one() to clk_preinit() Paul Walmsley
2009-05-26 16:29 ` [PATCH 00/10] OMAP clock/SDRC patches on v2.6.30-rc5 Paul Walmsley
2009-05-26 16:37   ` Russell King - ARM Linux
2009-05-26 16:51     ` Paul Walmsley
2009-05-26 22:04       ` Tony Lindgren

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