d5133b6a43
* Add board BananaPi M4 Zero Signed-off-by: Patrick Yavitz <pyavitz@xxxxx.com> * HACK: wrong DRAM size: add extra barrier in mctl_mem_matches People report that this is fixed by adding another "dsb();" at the beginning of the mctl_mem_matches() function. https://lore.kernel.org/all/ZWMv816r8YxPwsJO@BOB1/T/#mec26415158efa10e6f78c5c1a651bb834f8599c4 Signed-off-by: Patrick Yavitz <pyavitz@xxxxx.com> * v2 add barrier and udelay to mctl_mem_matches function Signed-off-by: Patrick Yavitz <pyavitz@xxxxx.com> --------- Signed-off-by: Patrick Yavitz <pyavitz@xxxxx.com> Co-authored-by: Patrick Yavitz <pyavitz@xxxxx.com>
60 lines
1.5 KiB
Diff
60 lines
1.5 KiB
Diff
From e9d34fce0765cb2927abeb4bde2225c5aee2925c Mon Sep 17 00:00:00 2001
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From: Patrick Yavitz <pyavitz@xxxxx.com>
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Date: Wed, 28 Feb 2024 11:55:04 -0500
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Subject: [PATCH] drivers: mmc: sunxi_mmc: bpi-m4-zero emmc boot support
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Signed-off-by: Patrick Yavitz <pyavitz@xxxxx.com>
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---
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drivers/mmc/sunxi_mmc.c | 18 ++++++++++++++----
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1 file changed, 14 insertions(+), 4 deletions(-)
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diff --git a/drivers/mmc/sunxi_mmc.c b/drivers/mmc/sunxi_mmc.c
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index 714706d241..2d23932099 100644
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--- a/drivers/mmc/sunxi_mmc.c
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+++ b/drivers/mmc/sunxi_mmc.c
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@@ -543,6 +543,10 @@ struct mmc *sunxi_mmc_init(int sdc_no)
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cfg->f_min = 400000;
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cfg->f_max = 52000000;
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+
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+ if (sdc_no == 2) {
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+ cfg->f_max = 8000000;
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+ }
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if (mmc_resource_init(sdc_no) != 0)
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return NULL;
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@@ -640,20 +644,26 @@ static int sunxi_mmc_probe(struct udevice *dev)
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struct mmc_config *cfg = &plat->cfg;
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struct ofnode_phandle_args args;
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u32 *ccu_reg;
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- int ret;
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+ int bus_width, ret;
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cfg->name = dev->name;
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+ bus_width = dev_read_u32_default(dev, "bus-width", 1);
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cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;
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+ cfg->host_caps = 0;
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+ if (bus_width == 8)
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+ cfg->host_caps |= MMC_MODE_8BIT;
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+ if (bus_width >= 4)
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+ cfg->host_caps |= MMC_MODE_4BIT;
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cfg->host_caps = MMC_MODE_HS_52MHz | MMC_MODE_HS;
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cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
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cfg->f_min = 400000;
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cfg->f_max = 52000000;
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- ret = mmc_of_parse(dev, cfg);
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- if (ret)
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- return ret;
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+ if (bus_width == 8) {
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+ cfg->f_max = 52000000;
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+ }
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priv->reg = dev_read_addr_ptr(dev);
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--
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2.39.2
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