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software/liblitesdcard/spisdcard: rename #defines and allow external definition.

This commit is contained in:
Florent Kermarrec 2020-06-09 13:50:16 +02:00
parent a9e8860e49
commit e27ed657e9
1 changed files with 11 additions and 7 deletions
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18
litex/soc/software/liblitesdcard/spisdcard.c
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@ -18,15 +18,19 @@
#ifdef CSR_SPISDCARD_BASE #ifdef CSR_SPISDCARD_BASE
#define SDCARD_DEBUG #define SPISDCARD_DEBUG
#ifndef SPISDCARD_CLK_FREQ_INIT
#define SPISDCARD_CLK_FREQ_INIT 400000
#endif
#ifndef SPISDCARD_CLK_FREQ
#define SPISDCARD_CLK_FREQ 10000000
#endif
/*-----------------------------------------------------------------------*/ /*-----------------------------------------------------------------------*/
/* SPI Master low-level functions */ /* SPI Master low-level functions */
/*-----------------------------------------------------------------------*/ /*-----------------------------------------------------------------------*/
#define SPI_CLK_FREQ_INIT 400000
#define SPI_CLK_FREQ_OPERATIONAL 10000000
static void spi_set_clk_freq(uint32_t clk_freq) { static void spi_set_clk_freq(uint32_t clk_freq) {
uint32_t divider; uint32_t divider;
divider = CONFIG_CLOCK_FREQUENCY/clk_freq + 1; divider = CONFIG_CLOCK_FREQUENCY/clk_freq + 1;
@ -34,7 +38,7 @@ static void spi_set_clk_freq(uint32_t clk_freq) {
divider = 65535; divider = 65535;
if (divider <= 2) /* At least half CPU speed */ if (divider <= 2) /* At least half CPU speed */
divider = 2; divider = 2;
#ifdef SDCARD_DEBUG #ifdef SPISDCARD_DEBUG
printf("Setting SDCard clk freq to "); printf("Setting SDCard clk freq to ");
if (clk_freq > 1000000) if (clk_freq > 1000000)
printf("%d MHz\n", (CONFIG_CLOCK_FREQUENCY/divider)/1000000); printf("%d MHz\n", (CONFIG_CLOCK_FREQUENCY/divider)/1000000);
@ -197,7 +201,7 @@ uint8_t spisdcard_init(void) {
uint16_t timeout; uint16_t timeout;
/* Set SPI clk freq to initialization frequency */ /* Set SPI clk freq to initialization frequency */
spi_set_clk_freq(SPI_CLK_FREQ_INIT); spi_set_clk_freq(SPISDCARD_CLK_FREQ_INIT);
/* Wait 10ms */ /* Wait 10ms */
busy_wait(10); busy_wait(10);
@ -227,7 +231,7 @@ uint8_t spisdcard_init(void) {
return 0; return 0;
/* Set SPI clk freq to operational frequency */ /* Set SPI clk freq to operational frequency */
spi_set_clk_freq(SPI_CLK_FREQ_OPERATIONAL); spi_set_clk_freq(SPISDCARD_CLK_FREQ);
return 1; return 1;
} }