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60 lines
2.0 KiB
Diff
60 lines
2.0 KiB
Diff
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From 813ba3e427671ba3ff35c825087b03f0ad91cf02 Mon Sep 17 00:00:00 2001
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From: Robert Marko <robimarko@gmail.com>
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Date: Mon, 7 Nov 2022 14:28:59 +0100
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Subject: [PATCH] clk: qcom: reset: support resetting multiple bits
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This patch adds the support for giving the complete bitmask
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in reset structure and reset operation will use this bitmask
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for all reset operations.
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Currently, reset structure only takes a single bit for each reset
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and then calculates the bitmask by using the BIT() macro.
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However, this is not sufficient anymore for newer SoC-s like IPQ8074,
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IPQ6018 and more, since their networking resets require multiple bits
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to be asserted in order to properly reset the HW block completely.
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So, in order to allow asserting multiple bits add "bitmask" field to
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qcom_reset_map, and then use that bitmask value if its populated in the
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driver, if its not populated, then we just default to existing behaviour
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and calculate the bitmask on the fly.
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Signed-off-by: Robert Marko <robimarko@gmail.com>
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Signed-off-by: Bjorn Andersson <andersson@kernel.org>
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Link: https://lore.kernel.org/r/20221107132901.489240-1-robimarko@gmail.com
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---
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drivers/clk/qcom/reset.c | 4 ++--
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drivers/clk/qcom/reset.h | 1 +
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2 files changed, 3 insertions(+), 2 deletions(-)
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--- a/drivers/clk/qcom/reset.c
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+++ b/drivers/clk/qcom/reset.c
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@@ -30,7 +30,7 @@ qcom_reset_assert(struct reset_controlle
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rst = to_qcom_reset_controller(rcdev);
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map = &rst->reset_map[id];
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- mask = BIT(map->bit);
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+ mask = map->bitmask ? map->bitmask : BIT(map->bit);
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return regmap_update_bits(rst->regmap, map->reg, mask, mask);
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}
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@@ -44,7 +44,7 @@ qcom_reset_deassert(struct reset_control
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rst = to_qcom_reset_controller(rcdev);
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map = &rst->reset_map[id];
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- mask = BIT(map->bit);
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+ mask = map->bitmask ? map->bitmask : BIT(map->bit);
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return regmap_update_bits(rst->regmap, map->reg, mask, 0);
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}
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--- a/drivers/clk/qcom/reset.h
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+++ b/drivers/clk/qcom/reset.h
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@@ -12,6 +12,7 @@ struct qcom_reset_map {
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unsigned int reg;
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u8 bit;
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u8 udelay;
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+ u32 bitmask;
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};
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struct regmap;
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