From d36740462a35aaaaa7e01e43c6ff666467070427 Mon Sep 17 00:00:00 2001 From: Shengzhou Liu Date: Wed, 25 May 2016 16:15:00 +0800 Subject: driver/ddr/fsl: Check condition for erratum A-009803 Add condition of checking the enabled of address parity for erratum A-009803, if parity is not enabled, the workaround of erratum A-009803 should not be applied. Signed-off-by: Shengzhou Liu Reviewed-by: York Sun --- drivers/ddr/fsl/fsl_ddr_gen4.c | 42 +++++++++++++++++++++++------------------- 1 file changed, 23 insertions(+), 19 deletions(-) (limited to 'drivers/ddr/fsl/fsl_ddr_gen4.c') diff --git a/drivers/ddr/fsl/fsl_ddr_gen4.c b/drivers/ddr/fsl/fsl_ddr_gen4.c index 5039f5de0a..d37e2474c9 100644 --- a/drivers/ddr/fsl/fsl_ddr_gen4.c +++ b/drivers/ddr/fsl/fsl_ddr_gen4.c @@ -206,12 +206,14 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs, #ifdef CONFIG_SYS_FSL_ERRATUM_A009803 /* part 1 of 2 */ - if (regs->ddr_sdram_cfg & SDRAM_CFG_RD_EN) { /* for RDIMM */ - ddr_out32(&ddr->ddr_sdram_rcw_2, - regs->ddr_sdram_rcw_2 & ~0x0f000000); + if (regs->ddr_sdram_cfg_2 & SDRAM_CFG2_AP_EN) { + if (regs->ddr_sdram_cfg & SDRAM_CFG_RD_EN) { /* for RDIMM */ + ddr_out32(&ddr->ddr_sdram_rcw_2, + regs->ddr_sdram_rcw_2 & ~0x0f000000); + } + ddr_out32(&ddr->err_disable, regs->err_disable | + DDR_ERR_DISABLE_APED); } - - ddr_out32(&ddr->err_disable, regs->err_disable | DDR_ERR_DISABLE_APED); #else ddr_out32(&ddr->err_disable, regs->err_disable); #endif @@ -395,22 +397,24 @@ step2: #endif /* CONFIG_SYS_FSL_ERRATUM_A008511 */ #ifdef CONFIG_SYS_FSL_ERRATUM_A009803 - /* if it's RDIMM */ - if (regs->ddr_sdram_cfg & SDRAM_CFG_RD_EN) { - for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { - if (!(regs->cs[i].config & SDRAM_CS_CONFIG_EN)) - continue; - set_wait_for_bits_clear(&ddr->sdram_md_cntl, - MD_CNTL_MD_EN | - MD_CNTL_CS_SEL(i) | - 0x070000ed, - MD_CNTL_MD_EN); - udelay(1); + if (regs->ddr_sdram_cfg_2 & SDRAM_CFG2_AP_EN) { + /* if it's RDIMM */ + if (regs->ddr_sdram_cfg & SDRAM_CFG_RD_EN) { + for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { + if (!(regs->cs[i].config & SDRAM_CS_CONFIG_EN)) + continue; + set_wait_for_bits_clear(&ddr->sdram_md_cntl, + MD_CNTL_MD_EN | + MD_CNTL_CS_SEL(i) | + 0x070000ed, + MD_CNTL_MD_EN); + udelay(1); + } } - } - ddr_out32(&ddr->err_disable, - regs->err_disable & ~DDR_ERR_DISABLE_APED); + ddr_out32(&ddr->err_disable, + regs->err_disable & ~DDR_ERR_DISABLE_APED); + } #endif } #endif -- cgit v1.2.1