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clk: qcom: gcc-ipq9574: Add BRANCH_HALT_VOTED flag

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commit 72ceafb587a56e26c905472418c7dc2033c294d3 upstream.

The crypto_ahb and crypto_axi clks are hardware voteable.
This means that the halt bit isn't reliable because some
other voter in the system, e.g. TrustZone, could be keeping
the clk enabled when the kernel turns it off from clk_disable().
Make these clks use voting mode by changing the halt check to
BRANCH_HALT_VOTED and toggle the voting bit in the voting register
instead of directly controlling the branch by writing to the branch
register. This fixes stuck clk warnings seen on ipq9574 and saves
power by actually turning the clk off.

Also changes the CRYPTO_AHB_CLK_ENA & CRYPTO_AXI_CLK_ENA
offset to 0xb004 from 0x16014.

Cc: stable@vger.kernel.org
Fixes: f6b2bd9cb29a ("clk: qcom: gcc-ipq9574: Enable crypto clocks")
Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
Link: https://lore.kernel.org/r/20240509105405.1262369-1-quic_mdalam@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Md Sadre Alam 2024-05-09 16:24:05 +05:30 committed by Greg Kroah-Hartman
parent 33de7c47a1
commit ba02424852
1 changed files with 6 additions and 4 deletions
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10
drivers/clk/qcom/gcc-ipq9574.c
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@ -2140,9 +2140,10 @@ static struct clk_rcg2 pcnoc_bfdcd_clk_src = {
static struct clk_branch gcc_crypto_axi_clk = {
.halt_reg = 0x16010,
.halt_check = BRANCH_HALT_VOTED,
.clkr = {
.enable_reg = 0x16010,
.enable_mask = BIT(0),
.enable_reg = 0xb004,
.enable_mask = BIT(15),
.hw.init = &(const struct clk_init_data) {
.name = "gcc_crypto_axi_clk",
.parent_hws = (const struct clk_hw *[]) {
@ -2156,9 +2157,10 @@ static struct clk_branch gcc_crypto_axi_clk = {
static struct clk_branch gcc_crypto_ahb_clk = {
.halt_reg = 0x16014,
.halt_check = BRANCH_HALT_VOTED,
.clkr = {
.enable_reg = 0x16014,
.enable_mask = BIT(0),
.enable_reg = 0xb004,
.enable_mask = BIT(16),
.hw.init = &(const struct clk_init_data) {
.name = "gcc_crypto_ahb_clk",
.parent_hws = (const struct clk_hw *[]) {