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From: Antony Pavlov <antonynpavlov@gmail.com>
To: barebox@lists.infradead.org
Cc: Oleksij Rempel <linux@rempel-privat.de>
Subject: [RFC v2 01/10] MIPS: ar933x: pbl: add pbl_ar9331_pll macro
Date: Mon, 21 Sep 2015 02:23:44 +0300	[thread overview]
Message-ID: <1442791433-10892-2-git-send-email-antonynpavlov@gmail.com> (raw)
In-Reply-To: <1442791433-10892-1-git-send-email-antonynpavlov@gmail.com>

From: Oleksij Rempel <linux@rempel-privat.de>

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
---
 arch/mips/include/asm/pbl_macros.h              | 21 ++++++++++++
 arch/mips/mach-ath79/include/mach/ar71xx_regs.h |  1 +
 arch/mips/mach-ath79/include/mach/pbl_macros.h  | 43 +++++++++++++++++++++++++
 3 files changed, 65 insertions(+)

diff --git a/arch/mips/include/asm/pbl_macros.h b/arch/mips/include/asm/pbl_macros.h
index 1d9d6ab..db46d0d 100644
--- a/arch/mips/include/asm/pbl_macros.h
+++ b/arch/mips/include/asm/pbl_macros.h
@@ -28,6 +28,27 @@
 #include <generated/compile.h>
 #include <generated/utsrelease.h>
 
+	.macro	pbl_reg_writel val addr
+	.set push
+	.set noreorder
+	li	t9, \addr
+	li	t8, \val
+	sw	t8, 0(t9)
+	.set	pop
+	.endm
+
+	.macro	pbl_reg_clr clr addr
+	.set push
+	.set noreorder
+	li	t9, \addr
+	li	t8, \clr
+	lw	t7, 0(t9)
+	not	t8, t8
+	and	t7, t8
+	sw	t7, 0(t9)
+	.set	pop
+	.endm
+
 	.macro	pbl_sleep reg count
 	.set push
 	.set noreorder
diff --git a/arch/mips/mach-ath79/include/mach/ar71xx_regs.h b/arch/mips/mach-ath79/include/mach/ar71xx_regs.h
index 77138ab..5082502 100644
--- a/arch/mips/mach-ath79/include/mach/ar71xx_regs.h
+++ b/arch/mips/mach-ath79/include/mach/ar71xx_regs.h
@@ -46,6 +46,7 @@
 #define AR933X_PLL_CPU_CONFIG_REFDIV_MASK	0x1f
 #define AR933X_PLL_CPU_CONFIG_OUTDIV_SHIFT	23
 #define AR933X_PLL_CPU_CONFIG_OUTDIV_MASK	0x7
+#define AR933X_PLL_CPU_CONFIG_PLLPWD		BIT(30)
 
 #define AR933X_PLL_CLOCK_CTRL_BYPASS		BIT(2)
 #define AR933X_PLL_CLOCK_CTRL_CPU_DIV_SHIFT	5
diff --git a/arch/mips/mach-ath79/include/mach/pbl_macros.h b/arch/mips/mach-ath79/include/mach/pbl_macros.h
new file mode 100644
index 0000000..1fc6eb5
--- /dev/null
+++ b/arch/mips/mach-ath79/include/mach/pbl_macros.h
@@ -0,0 +1,43 @@
+#ifndef __ASM_MACH_ATH79_PBL_MACROS_H
+#define __ASM_MACH_ATH79_PBL_MACROS_H
+
+#include <asm/addrspace.h>
+#include <asm/regdef.h>
+#include <mach/ar71xx_regs.h>
+
+#define PLL_BASE		(KSEG1 | AR71XX_PLL_BASE)
+#define PLL_CPU_CONFIG_REG	(PLL_BASE | AR933X_PLL_CPU_CONFIG_REG)
+#define PLL_CPU_CONFIG2_REG	(PLL_BASE | AR933X_PLL_CPU_CONFIG2_REG)
+#define PLL_CLOCK_CTRL_REG	(PLL_BASE | AR933X_PLL_CLOCK_CTRL_REG)
+
+#define DEF_25MHZ_PLL_CLOCK_CTRL \
+				((2 - 1) << AR933X_PLL_CLOCK_CTRL_AHB_DIV_SHIFT \
+				| (1 - 1) << AR933X_PLL_CLOCK_CTRL_DDR_DIV_SHIFT \
+				| (1 - 1) << AR933X_PLL_CLOCK_CTRL_CPU_DIV_SHIFT)
+#define DEF_25MHZ_SETTLE_TIME	(34000 / 40)
+#define DEF_25MHZ_PLL_CONFIG	( 1 << AR933X_PLL_CPU_CONFIG_OUTDIV_SHIFT \
+				| 1 << AR933X_PLL_CPU_CONFIG_REFDIV_SHIFT \
+				| 32 << AR933X_PLL_CPU_CONFIG_NINT_SHIFT)
+
+.macro	pbl_ar9331_pll
+	.set	push
+	.set	noreorder
+
+	/* Most devices have 25 MHz Ref clock. */
+	pbl_reg_writel (DEF_25MHZ_PLL_CLOCK_CTRL | AR933X_PLL_CLOCK_CTRL_BYPASS), \
+		PLL_CLOCK_CTRL_REG
+	pbl_reg_writel DEF_25MHZ_SETTLE_TIME, PLL_CPU_CONFIG2_REG
+	pbl_reg_writel (DEF_25MHZ_PLL_CONFIG | AR933X_PLL_CPU_CONFIG_PLLPWD), \
+		PLL_CPU_CONFIG_REG
+
+	/* power on CPU PLL */
+	pbl_reg_clr	AR933X_PLL_CPU_CONFIG_PLLPWD, PLL_CPU_CONFIG_REG
+	/* disable PLL bypass */
+	pbl_reg_clr	AR933X_PLL_CLOCK_CTRL_BYPASS, PLL_CLOCK_CTRL_REG
+
+	pbl_sleep	t2, 40
+
+	.set	pop
+.endm
+
+#endif /* __ASM_MACH_ATH79_PBL_MACROS_H */
-- 
2.5.0


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  reply	other threads:[~2015-09-20 23:24 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-20 23:23 [RFC v2 00/10] MIPS: barebox as a first stage loader on the Black Swift board Antony Pavlov
2015-09-20 23:23 ` Antony Pavlov [this message]
2015-09-20 23:23 ` [RFC v2 02/10] MIPS: ar933x: pbl: add pbl_ar9331_ddr2_config macro Antony Pavlov
2015-09-20 23:23 ` [RFC v2 03/10] MIPS: mach-ath79: add pbl_ar9331_uart_enable macro Antony Pavlov
2015-09-20 23:23 ` [RFC v2 04/10] MIPS: mach-ath79: add debug_ll_ar9331_init macro Antony Pavlov
2015-09-20 23:23 ` [RFC v2 05/10] MIPS: ath79: add black-swift board support Antony Pavlov
2015-09-20 23:23 ` [RFC v2 06/10] MIPS: add black-swift_defconfig Antony Pavlov
2015-09-20 23:23 ` [RFC v2 07/10] gpio: add ath79-gpio driver for Atheros MIPS SoCs Antony Pavlov
2015-09-20 23:23 ` [RFC v2 08/10] MIPS: ath79: use gpiolib Antony Pavlov
2015-09-20 23:23 ` [RFC v2 09/10] MIPS: dts: ar9331.dtsi: add gpio Antony Pavlov
2015-09-20 23:23 ` [RFC v2 10/10] WIP: MIPS: black-swift: use GPIO Antony Pavlov
2015-09-23  4:53 ` [RFC v2 00/10] MIPS: barebox as a first stage loader on the Black Swift board Sascha Hauer
2015-09-23  6:11   ` Antony Pavlov
2015-09-23  8:32     ` Sascha Hauer

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