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ddr: imx8m: Fix the ddr init hang on imx8mq

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On, i.MX8MQ, the PLL config must be done when ddrmix
isolation is released. So move the dram pll init after
iso config done. For other i.MX8M SOC, either init pll
before or after isolation is ok.

Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Jacky Bai 2019-08-08 09:59:11 +00:00 committed by Stefano Babic
parent 825ab6b406
commit 69b8e50975
1 changed files with 4 additions and 4 deletions
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8
drivers/ddr/imx/imx8m/ddr_init.c
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@ -41,14 +41,14 @@ void ddr_init(struct dram_timing_info *dram_timing)
clock_set_target_val(DRAM_APB_CLK_ROOT, CLK_ROOT_ON | CLK_ROOT_SOURCE_SEL(4) |
CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV4));
initial_drate = dram_timing->fsp_msg[0].drate;
/* default to the frequency point 0 clock */
ddrphy_init_set_dfi_clk(initial_drate);
/* disable iso */
reg32_write(0x303A00EC, 0x0000ffff); /* PGC_CPU_MAPPING */
reg32setbit(0x303A00F8, 5); /* PU_PGC_SW_PUP_REQ */
initial_drate = dram_timing->fsp_msg[0].drate;
/* default to the frequency point 0 clock */
ddrphy_init_set_dfi_clk(initial_drate);
/* D-aasert the presetn */
reg32_write(SRC_DDRC_RCR_ADDR, 0x8F000006);