Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
memory: brcmstb_memc: Expand LPDDR4 check to cover for LPDDR5
The same limitations that apply to LPDDR4 also apply to LPDDR5. Expand
the check and rename accordingly.
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20260122003501.1191059-1-florian.fainelli@broadcom.com
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
authored by
Florian Fainelli
and committed by
Krzysztof Kozlowski
a969a083
9983d51d
+5
-3
+5
-3
drivers/memory/brcmstb_memc.c
+5
-3
drivers/memory/brcmstb_memc.c
···
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#define REG_MEMC_CNTRLR_CONFIG 0x00
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#define CNTRLR_CONFIG_LPDDR4_SHIFT 5
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+
#define CNTRLR_CONFIG_LPDDR5_SHIFT 6
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#define CNTRLR_CONFIG_MASK 0xf
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#define REG_MEMC_SRPD_CFG_21 0x20
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#define REG_MEMC_SRPD_CFG_20 0x34
···
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u32 srpd_offset;
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};
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-
static int brcmstb_memc_uses_lpddr4(struct brcmstb_memc *memc)
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static int brcmstb_memc_uses_lpddr45(struct brcmstb_memc *memc)
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{
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void __iomem *config = memc->ddr_ctrl + REG_MEMC_CNTRLR_CONFIG;
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u32 reg;
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reg = readl_relaxed(config) & CNTRLR_CONFIG_MASK;
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return reg == CNTRLR_CONFIG_LPDDR4_SHIFT;
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return reg == CNTRLR_CONFIG_LPDDR4_SHIFT ||
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reg == CNTRLR_CONFIG_LPDDR5_SHIFT;
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}
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static int brcmstb_memc_srpd_config(struct brcmstb_memc *memc,
···
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* dynamic tuning process will also get affected by the inactivity
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* timeout, thus making it non functional.
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*/
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if (brcmstb_memc_uses_lpddr4(memc))
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if (brcmstb_memc_uses_lpddr45(memc))
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return -EOPNOTSUPP;
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ret = kstrtouint(buf, 10, &val);