From: Juuso Oikarinen Date: Mon, 12 Oct 2009 12:08:49 +0000 (+0300) Subject: wl1271: RefClk configuration X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=284134eb6f928f6cdbfe95ab79f8e46233a22c98;p=linux-beck.git wl1271: RefClk configuration Updated RefClk configuration based on reference sources. Apparently this change will improve RF performance. Signed-off-by: Juuso Oikarinen Reviewed-by: Luciano Coelho Signed-off-by: Luciano Coelho Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/wl12xx/wl1271_boot.c b/drivers/net/wireless/wl12xx/wl1271_boot.c index 1a3084cca9b8..b58657750716 100644 --- a/drivers/net/wireless/wl12xx/wl1271_boot.c +++ b/drivers/net/wireless/wl12xx/wl1271_boot.c @@ -435,13 +435,29 @@ int wl1271_boot(struct wl1271 *wl) int ret = 0; u32 tmp, clk, pause; - if (REF_CLOCK == 0 || REF_CLOCK == 2) - /* ref clk: 19.2/38.4 */ + if (REF_CLOCK == 0 || REF_CLOCK == 2 || REF_CLOCK == 4) + /* ref clk: 19.2/38.4/38.4-XTAL */ clk = 0x3; else if (REF_CLOCK == 1 || REF_CLOCK == 3) /* ref clk: 26/52 */ clk = 0x5; + if (REF_CLOCK != 0) { + u16 val; + /* Set clock type */ + val = wl1271_top_reg_read(wl, OCP_REG_CLK_TYPE); + val &= FREF_CLK_TYPE_BITS; + val |= CLK_REQ_PRCM; + wl1271_top_reg_write(wl, OCP_REG_CLK_TYPE, val); + } else { + u16 val; + /* Set clock polarity */ + val = wl1271_top_reg_read(wl, OCP_REG_CLK_POLARITY); + val &= FREF_CLK_POLARITY_BITS; + val |= CLK_REQ_OUTN_SEL; + wl1271_top_reg_write(wl, OCP_REG_CLK_POLARITY, val); + } + wl1271_reg_write32(wl, PLL_PARAMETERS, clk); pause = wl1271_reg_read32(wl, PLL_PARAMETERS); diff --git a/drivers/net/wireless/wl12xx/wl1271_boot.h b/drivers/net/wireless/wl12xx/wl1271_boot.h index 4501653fb52a..412443ee655a 100644 --- a/drivers/net/wireless/wl12xx/wl1271_boot.h +++ b/drivers/net/wireless/wl12xx/wl1271_boot.h @@ -50,10 +50,17 @@ struct wl1271_static_data { #define WU_COUNTER_PAUSE_VAL 0x3FF #define WELP_ARM_COMMAND_VAL 0x4 -#define OCP_REG_POLARITY 0x0064 +#define OCP_REG_POLARITY 0x0064 +#define OCP_REG_CLK_TYPE 0x0448 +#define OCP_REG_CLK_POLARITY 0x0cb2 #define CMD_MBOX_ADDRESS 0x407B4 #define POLARITY_LOW BIT(1) +#define FREF_CLK_TYPE_BITS 0xfffffe7f +#define CLK_REQ_PRCM 0x100 +#define FREF_CLK_POLARITY_BITS 0xfffff8ff +#define CLK_REQ_OUTN_SEL 0x700 + #endif