configs/bambino-200e: Add LPC43 SDMMC board support to Bambino-200E and fix errors/warns

arch/arm/src/lpc43xx/lpc43_sdmmc.c

@@ -65,6 +65,7 @@
 
 #include "up_arch.h"
 
+#include "chip/lpc43_pinconfig.h"
 #include "lpc43_cgu.h"
 #include "lpc43_ccu.h"
 #include "lpc43_gpio.h"

configs/bambino-200e/include/board.h

@@ -141,6 +141,8 @@
 
 #endif
 
+#define BOARD_MAIN_CLK              BOARD_FCCO_FREQUENCY   /* Main clock frequency */
+
 /* This is the clock setup we configure for:
  *
  *   SYSCLK = BOARD_OSCCLK_FREQUENCY = 12MHz  -> Select Main oscillator for source
@@ -179,6 +181,10 @@
 #define BOARD_SSP1_CLKSRC           BASE_SSP1_CLKSEL_IDIVA
 #define BOARD_SSP1_BASEFREQ         BOARD_IDIVA_FREQUENCY
 
+/* SDIO Clocking */
+
+#define BOARD_SDIO_CLKSRC           BASE_SDIO_CLKSEL_PLL1
+
 /* USB0 ********************************************************************/
 /* Settings needed in lpc43_cpu.c */
 
@@ -218,6 +224,41 @@
 #  define BOARD_SPIFI_FREQUENCY     (102000000) /* 204MHz / 14 = 14.57MHz */
 #endif
 
+/* SD/MMC or SDIO interface
+ *
+ * NOTE: The SDIO function clock to the interface can be up to 50 MHZ.
+ * Example:  BOARD_MAIN_CLK=220MHz, CLKDIV=5, Finput=44MHz.
+ */
+
+#define BOARD_SDMMC_MAXFREQ      50000000
+#define BOARD_SDMMC_CEIL(a,b)    (((a) + (b) - 1) / (b))
+
+#define BOARD_SDMMC_CLKDIV       BOARD_SDMMC_CEIL(BOARD_MAIN_CLK, BOARD_SDMMC_MAXFREQ)
+#define BOARD_SDMMC_FREQUENCY    (BOARD_MAIN_CLK / BOARD_SDMMC_CLKDIV)
+
+/* Mode-dependent function clock division
+ *
+ * Example:  BOARD_SDMMC_FREQUENCY=44MHz
+ *           BOARD_CLKDIV_INIT=110,    Fsdmmc=400KHz  (400KHz max)
+ *           BOARD_CLKDIV_MMCXFR=4[3], Fsdmmc=11Mhz   (20MHz max) See NOTE:
+ *           BOARD_CLKDIV_SDWIDEXFR=2, Fsdmmc=22MHz   (25MHz max)
+ *           BOARD_CLKDIV_SDXFR=2,     Fsdmmc=22MHz   (25MHz max)
+ *
+ * NOTE:  *lock division is 2*n. For example, value of 0 means divide by
+ * 2 * 0 = 0 (no division, bypass), value of 1 means divide by 2 * 1 = 2, value
+ * of 255 means divide by 2 * 255 = 510, and so on.
+ *
+ * SD/MMC logic will write the value ((clkdiv + 1) >> 1) as the divisor.  So an
+ * odd value calculated below will be moved up to next higher divider value.  So
+ * the value 3 will cause 2 to be written as the divider value and the effective
+ * divider will be 4.
+ */
+
+#define BOARD_CLKDIV_INIT       BOARD_SDMMC_CEIL(BOARD_SDMMC_FREQUENCY, 400000)
+#define BOARD_CLKDIV_MMCXFR     BOARD_SDMMC_CEIL(BOARD_SDMMC_FREQUENCY, 20000000)
+#define BOARD_CLKDIV_SDWIDEXFR  BOARD_SDMMC_CEIL(BOARD_SDMMC_FREQUENCY, 25000000)
+#define BOARD_CLKDIV_SDXFR      BOARD_SDMMC_CEIL(BOARD_SDMMC_FREQUENCY, 25000000)
+
 /* UART clocking ***********************************************************/
 /* Configure all U[S]ARTs to use the XTAL input frequency */
 
@@ -315,4 +356,14 @@
 #define GPIO_ENET_RESET     (GPIO_MODE_OUTPUT | GPIO_VALUE_ONE | GPIO_PORT0 | GPIO_PIN4)
 #define PINCONF_ENET_MDC    PINCONF_ENET_MDC_3
 
+/* SD/MMC pinout */
+
+#define GPIO_SD_CARD_DET_N         PINCONF_SD_CD_1
+#define GPIO_SD_D0                 PINCONF_SD_DAT0_1
+#define GPIO_SD_D1                 PINCONF_SD_DAT1_1
+#define GPIO_SD_D2                 PINCONF_SD_DAT2_1
+#define GPIO_SD_D3                 PINCONF_SD_DAT3_1
+#define GPIO_SD_CMD                PINCONF_SD_CMD_1
+#define GPIO_SD_CLK                CLKCONF_SD_CLK_2
+
 #endif  /* __CONFIG_BAMBINO_200E_INCLUDE_BOARD_H */

configs/bambino-200e/src/bambino-200e.h

@@ -51,6 +51,8 @@
  * Pre-processor Definitions
  ****************************************************************************/
 
+#define HAVE_MMCSD    1
+
 /****************************************************************************
  *   LEDs GPIO                         PIN     SIGNAL NAME
  *  -------------------------------- ------- --------------
@@ -99,6 +101,36 @@
 #  endif
 #endif
 
+/* MMC/SD support */
+
+#ifdef CONFIG_LPC43_SDMMC
+
+#  ifndef CONFIG_MMCSD
+#    warning MMC/SD support requires CONFIG_MMCSD
+#    undef HAVE_MMCSD
+#  endif
+
+#  ifndef CONFIG_MMCSD_SDIO
+#    warning MMC/SD support requires CONFIG_MMCSD_SDIO
+#    undef HAVE_MMCSD
+#  endif
+
+#  ifdef CONFIG_DISABLE_MOUNTPOINT
+#    warning MMC/SD cannot be supported with CONFIG_DISABLE_MOUNTPOINT
+#    undef HAVE_MMCSD
+#  endif
+
+#  ifdef CONFIG_NSH_MMCSDMINOR
+#    define MMCSD_MINOR CONFIG_NSH_MMCSDMINOR
+#  else
+#    define MMCSD_MINOR 0
+#  endif
+
+#else
+#  undef HAVE_MMCSD
+#endif
+
+
 /****************************************************************************
  * Public Types
  ****************************************************************************/

configs/bambino-200e/src/lpc43_appinit.c

@@ -58,6 +58,12 @@
 #  endif
 #endif
 
+#ifdef CONFIG_LPC43_SDMMC
+#  include <nuttx/sdio.h>
+#  include <nuttx/mmcsd.h>
+#  include "lpc43_sdmmc.h"
+#endif
+
 #include "bambino-200e.h"
 
 /****************************************************************************
@@ -162,15 +168,42 @@ static int nsh_spifi_initialize(void)
 
 int board_app_initialize(uintptr_t arg)
 {
+#ifdef HAVE_MMCSD
+  struct sdio_dev_s *sdmmc;
+#endif
+  int ret = 0;
+
   /* Initialize the SPIFI block device */
 
   (void)nsh_spifi_initialize();
 
+#ifdef HAVE_MMCSD
+  /* Get an instance of the SDIO interface */
+
+  sdmmc = lpc43_sdmmc_initialize(0);
+  if (!sdmmc)
+    {
+      syslog(LOG_ERR, "ERROR: Failed to initialize SD/MMC\n");
+    }
+  else
+    {
+      /* Bind the SDIO interface to the MMC/SD driver */
+
+      ret = mmcsd_slotinitialize(MMCSD_MINOR, sdmmc);
+      if (ret != OK)
+        {
+          syslog(LOG_ERR,
+                 "ERROR: Failed to bind SDIO to the MMC/SD driver: %d\n",
+                 ret);
+        }
+    }
+#endif
+
 #ifdef CONFIG_TIMER
   /* Registers the timers */
 
   lpc43_timerinitialize();
 #endif
 
-  return 0;
+  return ret;
 }