New patch to review for coreboot: 1210c52 cubieboard: Enable the SD controller and mux SD pins

[Alexandru Gagniuc]

Alexandru Gagniuc ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/4745

-gerrit

commit 1210c529e1063e35f4584fe77e9d72fd5f26e81e
Author: Alexandru Gagniuc 
Date:   Sat Dec 28 15:10:28 2013 -0500

cubieboard: Enable the SD controller and mux SD pins

This step needs to be done before calling any MMC functionality.

Change-Id: I88763072c8a541ddba794e79fb55e82eb2f187a9
    Signed-off-by: Alexandru Gagniuc 
---
 src/cpu/allwinner/a10/clock.h                  | 10 ++++++++++
 src/mainboard/cubietech/cubieboard/bootblock.c | 15 +++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/src/cpu/allwinner/a10/clock.h b/src/cpu/allwinner/a10/clock.h
index 0be736c..0a9cfd6 100644
--- a/src/cpu/allwinner/a10/clock.h
+++ b/src/cpu/allwinner/a10/clock.h
@@ -66,6 +66,16 @@
 /* DRAM_CLK values*/
 #define DRAM_CTRL_DCLK_OUT		(1 << 15)

+/* SDx_CLK values */
+#define SDx_CLK_GATE			(1 << 31)
+#define SDx_CLK_SRC_MASK		(3 << 24)
+#define  SDx_CLK_SRC_OSC24M		(0 << 24)
+#define  SDx_CLK_SRC_PLL6		(1 << 24)
+#define  SDx_CLK_SRC_PLL5		(2 << 24)
+#define SDx_RAT_EXP_N_MASK		(3 << 16)
+#define  SDx_RAT_EXP_N(n)		(((n) << 16) & SDx_RAT_EXP_N_MASK)
+#define SDx_RAT_M_MASK			(0xf << 0)
+#define  SDx_RAT_M(m)			((((m) - 1) << 0) & SDx_RAT_M_MASK)
 /**
  * \brief Clock gating definitions
  *
diff --git a/src/mainboard/cubietech/cubieboard/bootblock.c b/src/mainboard/cubietech/cubieboard/bootblock.c
index 2e5929c..c994c57 100644
--- a/src/mainboard/cubietech/cubieboard/bootblock.c
+++ b/src/mainboard/cubietech/cubieboard/bootblock.c
@@ -27,6 +27,10 @@
 #define GPB_UART0_FUNC			2
 #define GPB_UART0_PINS			((1 << 22) | (1 << 23))

+#define GPF_SD0_FUNC			2
+#define GPF_SD0_PINS			0x3f	/* PF0 thru PF5 */
+#define GPH1_SD0_DET_FUNC		5
+
 static void cubieboard_set_sys_clock(void)
 {
    u32 reg32;
@@ -60,6 +64,13 @@ static void cubieboard_setup_clocks(void)
    write32(APB1_CLK_SRC_OSC24M | APB1_RAT_N(0) | APB1_RAT_M(0),
    	&ccm->apb1_clk_div_cfg);

+	/* Configure the clock for SD0 */
+	write32(SDx_CLK_GATE | SDx_CLK_SRC_OSC24M | SDx_RAT_EXP_N(0)
+		| SDx_RAT_M(1), &ccm->sd0_clk_cfg);
+
+	/* Enable clock to SD0 */
+	a1x_periph_clock_enable(A1X_CLKEN_MMC0);
+
 }

static void cubieboard_setup_gpios(void)
@@ -71,6 +82,10 @@ static void cubieboard_setup_gpios(void)

/* Mux UART pins */
    gpio_set_multipin_func(GPB, GPB_UART0_PINS, GPB_UART0_FUNC);
+
+	/* Mux SD pins */
+	gpio_set_multipin_func(GPF, GPF_SD0_PINS, GPF_SD0_FUNC);
+	gpio_set_pin_func(GPH, 1, GPH1_SD0_DET_FUNC);
 }

static void cubieboard_enable_uart(void)