From 77a92c710b65864fe07491864f3bbac9fbac51bc Mon Sep 17 00:00:00 2001 From: Nageswari Srinivasan Date: Wed, 6 Jan 2010 17:19:49 +0530 Subject: davinci: add CDCE949 support on DM6467 EVM This patch adds the CDCE949 reference oscillator to the davinci clock list. On the DM6467T EVM, the CDCE949 is responsible for generating the pixel clock for display. On the DM6467 EVM, this pixel clock was being obtained from an internal source. This is not possible on the DM6467T EVM because of the presence of a 33MHz oscillator. The TSIF module also requires the CDCE949 to generate the data clocks. The actual clock definitions will be added by patches adding support for DM6467T VPIF and TSIF. This patch mearly lays the foundation for that work. Signed-off-by: Nageswari Srinivasan Signed-off-by: Sekhar Nori Signed-off-by: Kevin Hilman --- arch/arm/mach-davinci/board-dm646x-evm.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) (limited to 'arch/arm/mach-davinci/board-dm646x-evm.c') diff --git a/arch/arm/mach-davinci/board-dm646x-evm.c b/arch/arm/mach-davinci/board-dm646x-evm.c index 542bfdbbea0f..815067b2413e 100644 --- a/arch/arm/mach-davinci/board-dm646x-evm.c +++ b/arch/arm/mach-davinci/board-dm646x-evm.c @@ -40,6 +40,8 @@ #include #include #include +#include +#include #include "clock.h" @@ -389,6 +391,9 @@ static struct i2c_board_info __initdata i2c_info[] = { { I2C_BOARD_INFO("cpld_video", 0x3b), }, + { + I2C_BOARD_INFO("cdce949", 0x6c), + }, }; static struct davinci_i2c_platform_data i2c_pdata = { @@ -681,9 +686,35 @@ static void __init evm_init_i2c(void) evm_init_video(); } +#define CDCE949_XIN_RATE 27000000 + +/* CDCE949 support - "lpsc" field is overridden to work as clock number */ +static struct clk cdce_clk_in = { + .name = "cdce_xin", + .rate = CDCE949_XIN_RATE, +}; + +static struct davinci_clk cdce_clks[] = { + CLK(NULL, "xin", &cdce_clk_in), + CLK(NULL, NULL, NULL), +}; + +static void __init cdce_clk_init(void) +{ + struct davinci_clk *c; + struct clk *clk; + + for (c = cdce_clks; c->lk.clk; c++) { + clk = c->lk.clk; + clkdev_add(&c->lk); + clk_register(clk); + } +} + static void __init davinci_map_io(void) { dm646x_init(); + cdce_clk_init(); } static struct davinci_uart_config uart_config __initdata = { -- cgit