Alexandru Gagniuc (mr.nuke.me@gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/4745
-gerrit
commit 4e11b448206c4afaa87a8828b91697fa7e326192 Author: Alexandru Gagniuc mr.nuke.me@gmail.com 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 mr.nuke.me@gmail.com --- 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)