diff options
| author | Florian Fainelli <florian.fainelli@broadcom.com> | 2026-01-21 16:35:00 -0800 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzk@kernel.org> | 2026-02-26 09:43:04 +0100 |
| commit | a969a0835152984a0f556434eafdee0b84213670 (patch) | |
| tree | c77f33fcead9085873a8f9e38d7e33136b1b4f97 | |
| parent | 9983d51d1a68520ce74663920929e27b191cf43a (diff) | |
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>
| -rw-r--r-- | drivers/memory/brcmstb_memc.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/memory/brcmstb_memc.c b/drivers/memory/brcmstb_memc.c index ba73470b1b13..c28fe9093616 100644 --- a/drivers/memory/brcmstb_memc.c +++ b/drivers/memory/brcmstb_memc.c @@ -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); |