lpc32xx: add support for board work_92105

Work_92105 from Work Microwave is an LPC3250-
based board with the following features:
- 64MB or 128MB SDR DRAM
- 1 GB SLC NAND, managed through MLC controller.
- Ethernet
- Ethernet + PHY SMSC8710
- I2C:
  - EEPROM (24M01-compatible)
  - RTC (DS1374-compatible)
  - Temperature sensor (DS620)
  - DACs (2 x MAX518)
- SPI (through SSP interface)
  - Port expander MAX6957
- LCD display (HD44780-compatible), controlled
  through the port expander and DACs

This board has SPL support, and uses the LPC32XX boot
image format.

Signed-off-by: Albert ARIBAUD (3ADEV) <albert.aribaud@3adev.fr>

5 files changed, 50 insertions, 1 deletions

diff --git a/arch/arm/include/asm/arch-lpc32xx/clk.h b/arch/arm/include/asm/arch-lpc32xx/clk.h
index 2cb5703..9449869 100644
--- a/arch/arm/include/asm/arch-lpc32xx/clk.h
+++ b/arch/arm/include/asm/arch-lpc32xx/clk.h
@@ -71,6 +71,7 @@ struct clk_pm_regs {
 };
 
 /* HCLK Divider Control Register bits */
+#define CLK_HCLK_DDRAM_MASK		(0x3 << 7)
 #define CLK_HCLK_DDRAM_HALF		(0x2 << 7)
 #define CLK_HCLK_DDRAM_NOMINAL		(0x1 << 7)
 #define CLK_HCLK_DDRAM_STOPPED		(0x0 << 7)
@@ -158,11 +159,15 @@ struct clk_pm_regs {
 /* SSP Clock Control Register bits */
 #define CLK_SSP0_ENABLE_CLOCK		(1 << 0)
 
+/* SDRAMCLK register bits */
+#define CLK_SDRAM_DDR_SEL		(1 << 1)
+
 unsigned int get_sys_clk_rate(void);
 unsigned int get_hclk_pll_rate(void);
 unsigned int get_hclk_clk_div(void);
 unsigned int get_hclk_clk_rate(void);
 unsigned int get_periph_clk_div(void);
 unsigned int get_periph_clk_rate(void);
+unsigned int get_sdram_clk_rate(void);
 
 #endif /* _LPC32XX_CLK_H */
diff --git a/arch/arm/include/asm/arch-lpc32xx/cpu.h b/arch/arm/include/asm/arch-lpc32xx/cpu.h
index 1067107..0b5dca1 100644
--- a/arch/arm/include/asm/arch-lpc32xx/cpu.h
+++ b/arch/arm/include/asm/arch-lpc32xx/cpu.h
@@ -27,6 +27,7 @@
 #define HS_UART7_BASE	0x4001C000	/* High speed UART 7 registers base */
 #define RTC_BASE	0x40024000	/* RTC registers base               */
 #define GPIO_BASE	0x40028000	/* GPIO registers base              */
+#define MUX_BASE	0x40028100	/* MUX registers base               */
 #define WDT_BASE	0x4003C000	/* Watchdog timer registers base    */
 #define TIMER0_BASE	0x40044000	/* Timer0 registers base            */
 #define TIMER1_BASE	0x4004C000	/* Timer1 registers base            */
diff --git a/arch/arm/include/asm/arch-lpc32xx/emc.h b/arch/arm/include/asm/arch-lpc32xx/emc.h
index 82d9bcc..1a2bab2 100644
--- a/arch/arm/include/asm/arch-lpc32xx/emc.h
+++ b/arch/arm/include/asm/arch-lpc32xx/emc.h
@@ -76,4 +76,25 @@ struct emc_regs {
 #define EMC_STAT_WAITWR(n)		(((n) - 2) & 0x1F)
 #define EMC_STAT_WAITTURN(n)		(((n) - 1) & 0x0F)
 
+/* EMC settings for DRAM */
+struct emc_dram_settings {
+	u32	cmddelay;
+	u32	config0;
+	u32	rascas0;
+	u32	rdconfig;
+	u32	trp;
+	u32	tras;
+	u32	tsrex;
+	u32	twr;
+	u32	trc;
+	u32	trfc;
+	u32	txsr;
+	u32	trrd;
+	u32	tmrd;
+	u32	tcdlr;
+	u32	refresh;
+	u32	mode;
+	u32	emode;
+};
+
 #endif /* _LPC32XX_EMC_H */
diff --git a/arch/arm/include/asm/arch-lpc32xx/mux.h b/arch/arm/include/asm/arch-lpc32xx/mux.h
new file mode 100644
index 0000000..dc1b5bc
--- /dev/null
+++ b/arch/arm/include/asm/arch-lpc32xx/mux.h
@@ -0,0 +1,18 @@
+/*
+ * LPC32xx MUX interface
+ *
+ * (C) Copyright 2015  DENX Software Engineering GmbH
+ * Written-by: Albert ARIBAUD <albert.aribaud@3adev.fr>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/**
+ * MUX register map for LPC32xx
+ */
+
+struct mux_regs {
+	u32 p_mux_set;
+	u32 p_mux_clr;
+	u32 p_mux_state;
+};
diff --git a/arch/arm/include/asm/arch-lpc32xx/sys_proto.h b/arch/arm/include/asm/arch-lpc32xx/sys_proto.h
index 86d5ee9..c3d890d 100644
--- a/arch/arm/include/asm/arch-lpc32xx/sys_proto.h
+++ b/arch/arm/include/asm/arch-lpc32xx/sys_proto.h
@@ -7,10 +7,14 @@
 #ifndef _LPC32XX_SYS_PROTO_H
 #define _LPC32XX_SYS_PROTO_H
 
+#include <asm/arch/emc.h>
+
 void lpc32xx_uart_init(unsigned int uart_id);
 void lpc32xx_mac_init(void);
 void lpc32xx_mlc_nand_init(void);
 void lpc32xx_i2c_init(unsigned int devnum);
 void lpc32xx_ssp_init(void);
-
+#if defined(CONFIG_SPL_BUILD)
+void ddr_init(const struct emc_dram_settings *dram);
+#endif
 #endif /* _LPC32XX_SYS_PROTO_H */