mimxrt1010: Increase max SPI speed

arturo182 · arturo182 · commit f92d53eaab62 · 2020-05-18T22:07:38.000+02:00
diff --git a/ports/mimxrt10xx/common-hal/busio/SPI.c b/ports/mimxrt10xx/common-hal/busio/SPI.c
@@ -58,7 +58,7 @@ STATIC void config_periph_pin(const mcu_periph_obj_t *periph) {
             | IOMUXC_SW_PAD_CTL_PAD_SRE(0));
 }
 
-#define LPSPI_MASTER_CLK_FREQ (CLOCK_GetFreq(kCLOCK_Usb1PllPfd0Clk) / (CLOCK_GetDiv(kCLOCK_LpspiDiv)))
+#define LPSPI_MASTER_CLK_FREQ (CLOCK_GetFreq(kCLOCK_Usb1PllPfd0Clk) / (CLOCK_GetDiv(kCLOCK_LpspiDiv) + 1))
 
 void spi_reset(void) {
     for (int i = 0; i < MAX_SPI; i++) {
diff --git a/ports/mimxrt10xx/peripherals/mimxrt10xx/MIMXRT1011/clocks.c b/ports/mimxrt10xx/peripherals/mimxrt10xx/MIMXRT1011/clocks.c
@@ -55,7 +55,7 @@
 #define BOARD_BOOTCLOCKRUN_GPT2_IPG_CLK_HIGHFREQ 62500000UL
 #define BOARD_BOOTCLOCKRUN_IPG_CLK_ROOT 125000000UL
 #define BOARD_BOOTCLOCKRUN_LPI2C_CLK_ROOT 60000000UL
-#define BOARD_BOOTCLOCKRUN_LPSPI_CLK_ROOT 105600000UL
+#define BOARD_BOOTCLOCKRUN_LPSPI_CLK_ROOT 130900000UL
 #define BOARD_BOOTCLOCKRUN_MQS_MCLK 63529411UL
 #define BOARD_BOOTCLOCKRUN_PERCLK_CLK_ROOT 62500000UL
 #define BOARD_BOOTCLOCKRUN_SAI1_CLK_ROOT 63529411UL
@@ -137,7 +137,7 @@ void clocks_init(void) {
     CLOCK_DisableClock(kCLOCK_Lpspi1);
     CLOCK_DisableClock(kCLOCK_Lpspi2);
     /* Set LPSPI_PODF. */
-    CLOCK_SetDiv(kCLOCK_LpspiDiv, 7);
+    CLOCK_SetDiv(kCLOCK_LpspiDiv, 2);
     /* Set Lpspi clock source. */
     CLOCK_SetMux(kCLOCK_LpspiMux, 1);
     /* Disable TRACE clock gate. */

Original file line number	Diff line number	Diff line change
`@@ -58,7 +58,7 @@ STATIC void config_periph_pin(const mcu_periph_obj_t *periph) {`
`58`	`58`	`\| IOMUXC_SW_PAD_CTL_PAD_SRE(0));`
`59`	`59`	`}`
`60`	`60`
`61`		`-#define LPSPI_MASTER_CLK_FREQ (CLOCK_GetFreq(kCLOCK_Usb1PllPfd0Clk) / (CLOCK_GetDiv(kCLOCK_LpspiDiv)))`
	`61`	`+#define LPSPI_MASTER_CLK_FREQ (CLOCK_GetFreq(kCLOCK_Usb1PllPfd0Clk) / (CLOCK_GetDiv(kCLOCK_LpspiDiv) + 1))`
`62`	`62`
`63`	`63`	`void spi_reset(void) {`
`64`	`64`	`for (int i = 0; i < MAX_SPI; i++) {`