mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-25 16:31:13 +00:00
4be1e39c4e
Enable all necessary drivers for the rk356x SoCs, including PHY, SCMI, SPI etc. Also backport 2 upstream patches for sdhci fixes. Signed-off-by: Tianling Shen <cnsztl@immortalwrt.org>
53 lines
2.0 KiB
Diff
53 lines
2.0 KiB
Diff
From 49502408007b77ff290ce62e6218cefaeedcb31a Mon Sep 17 00:00:00 2001
|
|
From: Vasily Khoruzhick <anarsoul@gmail.com>
|
|
Date: Thu, 9 Mar 2023 17:03:49 -0800
|
|
Subject: [PATCH] mmc: sdhci-of-dwcmshc: properly determine max clock on
|
|
Rockchip
|
|
|
|
Currently .get_max_clock returns the current clock rate for cclk_emmc
|
|
on rk35xx, thus max clock gets set to whatever bootloader set it to.
|
|
|
|
In case of u-boot, it is intentionally reset to 50 MHz if it boots
|
|
from eMMC, see mmc_deinit() in u-boot sources. As a result, HS200 and
|
|
HS400 modes are never selected by Linux, because dwcmshc_rk35xx_postinit
|
|
clears appropriate caps if host->mmc->f_max is < 52MHz
|
|
|
|
cclk_emmc is not a fixed clock on rk35xx, so using
|
|
sdhci_pltfm_clk_get_max_clock is not appropriate here.
|
|
|
|
Implement rk35xx_get_max_clock that returns actual max clock for cclk_emmc.
|
|
|
|
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
|
|
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
|
|
Link: https://lore.kernel.org/r/20230310010349.509132-1-anarsoul@gmail.com
|
|
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
|
|
---
|
|
drivers/mmc/host/sdhci-of-dwcmshc.c | 9 ++++++++-
|
|
1 file changed, 8 insertions(+), 1 deletion(-)
|
|
|
|
--- a/drivers/mmc/host/sdhci-of-dwcmshc.c
|
|
+++ b/drivers/mmc/host/sdhci-of-dwcmshc.c
|
|
@@ -126,6 +126,13 @@ static unsigned int dwcmshc_get_max_cloc
|
|
return pltfm_host->clock;
|
|
}
|
|
|
|
+static unsigned int rk35xx_get_max_clock(struct sdhci_host *host)
|
|
+{
|
|
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
|
|
+
|
|
+ return clk_round_rate(pltfm_host->clk, ULONG_MAX);
|
|
+}
|
|
+
|
|
static void dwcmshc_check_auto_cmd23(struct mmc_host *mmc,
|
|
struct mmc_request *mrq)
|
|
{
|
|
@@ -343,7 +350,7 @@ static const struct sdhci_ops sdhci_dwcm
|
|
.set_clock = dwcmshc_rk3568_set_clock,
|
|
.set_bus_width = sdhci_set_bus_width,
|
|
.set_uhs_signaling = dwcmshc_set_uhs_signaling,
|
|
- .get_max_clock = sdhci_pltfm_clk_get_max_clock,
|
|
+ .get_max_clock = rk35xx_get_max_clock,
|
|
.reset = rk35xx_sdhci_reset,
|
|
.adma_write_desc = dwcmshc_adma_write_desc,
|
|
};
|