feat(st-ddr): add STM32MP2 driver
Add driver to support DDR on STM32MP2 platform. It drives the DDR PHY
and its firmware, as well as the DDR controller.
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
Signed-off-by: Maxime Méré <maxime.mere@foss.st.com>
Change-Id: I93de2db1b9378d5654e76b3bf6f3407d80bc4ca5
diff --git a/include/drivers/st/stm32mp2_ddr_helpers.h b/include/drivers/st/stm32mp2_ddr_helpers.h
index 069fb83..9329fff 100644
--- a/include/drivers/st/stm32mp2_ddr_helpers.h
+++ b/include/drivers/st/stm32mp2_ddr_helpers.h
@@ -7,6 +7,29 @@
#ifndef STM32MP2_DDR_HELPERS_H
#define STM32MP2_DDR_HELPERS_H
+#include <stdbool.h>
+#include <stdint.h>
+
+#include <drivers/st/stm32mp2_ddr_regs.h>
+
+enum stm32mp2_ddr_sr_mode {
+ DDR_SR_MODE_INVALID = 0,
+ DDR_SSR_MODE,
+ DDR_HSR_MODE,
+ DDR_ASR_MODE,
+};
+
+void ddr_activate_controller(struct stm32mp_ddrctl *ctl, bool sr_entry);
+void ddr_wait_lp3_mode(bool state);
+int ddr_sr_exit_loop(void);
+uint32_t ddr_get_io_calibration_val(void);
+int ddr_sr_entry(bool standby);
+int ddr_sr_exit(void);
+enum stm32mp2_ddr_sr_mode ddr_read_sr_mode(void);
+void ddr_set_sr_mode(enum stm32mp2_ddr_sr_mode mode);
+void ddr_save_sr_mode(void);
+void ddr_restore_sr_mode(void);
void ddr_sub_system_clk_init(void);
+void ddr_sub_system_clk_off(void);
#endif /* STM32MP2_DDR_HELPERS_H */