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From: Antony Pavlov <antonynpavlov@gmail.com>
To: barebox@lists.infradead.org
Subject: [RFC v2 04/10] MIPS: mach-ath79: add debug_ll_ar9331_init macro
Date: Mon, 21 Sep 2015 02:23:47 +0300	[thread overview]
Message-ID: <1442791433-10892-5-git-send-email-antonynpavlov@gmail.com> (raw)
In-Reply-To: <1442791433-10892-1-git-send-email-antonynpavlov@gmail.com>

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
---
 arch/mips/mach-ath79/include/mach/debug_ll.h | 29 ++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/arch/mips/mach-ath79/include/mach/debug_ll.h b/arch/mips/mach-ath79/include/mach/debug_ll.h
index d3813af..e0c3f79 100644
--- a/arch/mips/mach-ath79/include/mach/debug_ll.h
+++ b/arch/mips/mach-ath79/include/mach/debug_ll.h
@@ -63,6 +63,35 @@ static inline void PUTC_LL(int ch)
  * Macros for use in assembly language code
  */
 
+#define AR933X_UART_CS_REG		0x04
+#define UART_CS_REG	((KSEG1 | AR933X_UART_BASE) | AR933X_UART_CS_REG)
+#define AR933X_UART_CS_IF_MODE_S	2
+#define	  AR933X_UART_CS_IF_MODE_DCE	2
+#define AR933X_UART_CS_TX_READY_ORIDE	BIT(7)
+#define AR933X_UART_CS_RX_READY_ORIDE	BIT(8)
+
+/*
+ * simple uart clock setup
+ * from u-boot_mod/u-boot/cpu/mips/ar7240/hornet_serial.c
+ */
+#define BAUD_CLOCK 25000000
+#define CLOCK_SCALE ((BAUD_CLOCK / (16 * CONFIG_BAUDRATE)) - 1)
+#define CLOCK_STEP 0x2000
+
+#define AR933X_UART_CLOCK_REG		0x08
+#define CLOCK_REG	((KSEG1 | AR933X_UART_BASE) | AR933X_UART_CLOCK_REG)
+
+.macro debug_ll_ar9331_init
+#ifdef CONFIG_DEBUG_LL
+
+	pbl_reg_writel ((AR933X_UART_CS_IF_MODE_DCE << AR933X_UART_CS_IF_MODE_S) \
+			| AR933X_UART_CS_TX_READY_ORIDE \
+			| AR933X_UART_CS_RX_READY_ORIDE), UART_CS_REG
+	pbl_reg_writel ((CLOCK_SCALE << 16) | CLOCK_STEP), CLOCK_REG
+
+#endif /* CONFIG_DEBUG_LL */
+.endm
+
 /*
  * output a character in a0
  */
-- 
2.5.0


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  parent 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 ` [RFC v2 01/10] MIPS: ar933x: pbl: add pbl_ar9331_pll macro Antony Pavlov
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 ` Antony Pavlov [this message]
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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