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memory: brcmstb_memc: Expand LPDDR4 check to cover for LPDDR5

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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>
This commit is contained in:
Florian Fainelli
2026-01-21 16:35:00 -08:00
committed by Krzysztof Kozlowski
parent 9983d51d1a
commit a969a08351
1 changed files with 5 additions and 3 deletions
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8
drivers/memory/brcmstb_memc.c
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@@ -14,6 +14,7 @@
#define REG_MEMC_CNTRLR_CONFIG 0x00
#define CNTRLR_CONFIG_LPDDR4_SHIFT 5
#define CNTRLR_CONFIG_LPDDR5_SHIFT 6
#define CNTRLR_CONFIG_MASK 0xf
#define REG_MEMC_SRPD_CFG_21 0x20
#define REG_MEMC_SRPD_CFG_20 0x34
@@ -34,14 +35,15 @@ struct brcmstb_memc {
u32 srpd_offset;
};
static int brcmstb_memc_uses_lpddr4(struct brcmstb_memc *memc)
static int brcmstb_memc_uses_lpddr45(struct brcmstb_memc *memc)
{
void __iomem *config = memc->ddr_ctrl + REG_MEMC_CNTRLR_CONFIG;
u32 reg;
reg = readl_relaxed(config) & CNTRLR_CONFIG_MASK;
return reg == CNTRLR_CONFIG_LPDDR4_SHIFT;
return reg == CNTRLR_CONFIG_LPDDR4_SHIFT ||
reg == CNTRLR_CONFIG_LPDDR5_SHIFT;
}
static int brcmstb_memc_srpd_config(struct brcmstb_memc *memc,
@@ -95,7 +97,7 @@ static ssize_t srpd_store(struct device *dev, struct device_attribute *attr,
* dynamic tuning process will also get affected by the inactivity
* timeout, thus making it non functional.
*/
if (brcmstb_memc_uses_lpddr4(memc))
if (brcmstb_memc_uses_lpddr45(memc))
return -EOPNOTSUPP;
ret = kstrtouint(buf, 10, &val);