Set/unset SRAM REQ ACK bit, based on CPU and AHB clocks in DRAM setup

diff --git a/u-boot/cpu/mips/ar7240/qca_dram.c b/u-boot/cpu/mips/ar7240/qca_dram.c
index ad173ce12ee73fde250c86c3d1824f4b06a30330..86fc3f151bb382e8045339a057de23bc97920f89 100644 (file)
--- a/u-boot/cpu/mips/ar7240/qca_dram.c
+++ b/u-boot/cpu/mips/ar7240/qca_dram.c
@@ -833,6 +833,14 @@ void qca_dram_init(void)
        /* If DDR_CLK < 2 * AHB_CLK, set DDR FSM wait control to 0xA24 */
        if (ddr_clk < (2 * ahb_clk))
                qca_soc_reg_write(QCA_DDR_FSM_WAIT_CTRL_REG, 0xA24);
+
+       /* If CPU clock < AHB clock, set SRAM REQ ACK */
+       if (cpu_clk < ahb_clk)
+               qca_soc_reg_read_set(QCA_DDR_CTRL_CFG_REG,
+                                    QCA_DDR_CTRL_CFG_SRAM_REQ_ACK_MASK);
+       else
+               qca_soc_reg_read_clear(QCA_DDR_CTRL_CFG_REG,
+                                      QCA_DDR_CTRL_CFG_SRAM_REQ_ACK_MASK);
 #endif
 
        /*