serial: msm-geni: don't rely on parent misc device

commit 1b15483deb3f ("misc: add Qualcomm GENI SE QUP device driver")
introduced support for platform-specific oversampling values, necessary
to configure the UART clocks on all platforms at runtime. However it
relies in probing a parent device. Despite the DM_FLAG_PRE_RELOC flag,
this is not done consistently during boot.

Instead, take another approach by relying on ofnode_ helpers to read the
serial engine base address and do the read directly. This fixes early
UART on boards with a non-default oversampling rate.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

1 files changed, 0 insertions, 41 deletions

diff --git a/drivers/misc/qcom-geni-se.c b/drivers/misc/qcom-geni-se.c
deleted file mode 100644
index 281a5ec819a..00000000000
--- a/drivers/misc/qcom-geni-se.c
+++ /dev/null
@@ -1,41 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Qualcomm Generic Interface (GENI) Serial Engine (SE) Wrapper
- *
- * Copyright (C) 2023 Linaro Ltd. <vladimir.zapolskiy@linaro.org>
- */
-
-#include <common.h>
-#include <dm.h>
-#include <misc.h>
-#include <asm/io.h>
-
-static int geni_se_qup_read(struct udevice *dev, int offset,
-			    void *buf, int size)
-{
-	fdt_addr_t base = dev_read_addr(dev);
-
-	if (size != sizeof(u32))
-		return -EINVAL;
-
-	*(u32 *)buf = readl(base + offset);
-
-	return size;
-}
-
-static struct misc_ops geni_se_qup_ops = {
-	.read = geni_se_qup_read,
-};
-
-static const struct udevice_id geni_se_qup_ids[] = {
-	{ .compatible = "qcom,geni-se-qup" },
-	{}
-};
-
-U_BOOT_DRIVER(geni_se_qup) = {
-	.name = "geni_se_qup",
-	.id = UCLASS_MISC,
-	.of_match = geni_se_qup_ids,
-	.ops = &geni_se_qup_ops,
-	.flags  = DM_FLAG_PRE_RELOC,
-};